diff options
| -rw-r--r-- | drivers/staging/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/staging/Makefile | 1 | ||||
| -rw-r--r-- | drivers/staging/heci/Kconfig | 7 | ||||
| -rw-r--r-- | drivers/staging/heci/Makefile | 9 | ||||
| -rw-r--r-- | drivers/staging/heci/TODO | 6 | ||||
| -rw-r--r-- | drivers/staging/heci/heci.h | 175 | ||||
| -rw-r--r-- | drivers/staging/heci/heci_data_structures.h | 529 | ||||
| -rw-r--r-- | drivers/staging/heci/heci_init.c | 1083 | ||||
| -rw-r--r-- | drivers/staging/heci/heci_interface.c | 498 | ||||
| -rw-r--r-- | drivers/staging/heci/heci_interface.h | 170 | ||||
| -rw-r--r-- | drivers/staging/heci/heci_main.c | 1576 | ||||
| -rw-r--r-- | drivers/staging/heci/heci_version.h | 54 | ||||
| -rw-r--r-- | drivers/staging/heci/interrupt.c | 1555 | ||||
| -rw-r--r-- | drivers/staging/heci/io_heci.c | 872 |
14 files changed, 0 insertions, 6537 deletions
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig index 66188a5bf44b..e86a6716156c 100644 --- a/drivers/staging/Kconfig +++ b/drivers/staging/Kconfig @@ -103,8 +103,6 @@ source "drivers/staging/phison/Kconfig" source "drivers/staging/p9auth/Kconfig" -source "drivers/staging/heci/Kconfig" - source "drivers/staging/line6/Kconfig" source "drivers/gpu/drm/radeon/Kconfig" diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile index 3c64d5fad655..fa5361664ba8 100644 --- a/drivers/staging/Makefile +++ b/drivers/staging/Makefile @@ -34,7 +34,6 @@ obj-$(CONFIG_STLC45XX) += stlc45xx/ obj-$(CONFIG_B3DFG) += b3dfg/ obj-$(CONFIG_IDE_PHISON) += phison/ obj-$(CONFIG_PLAN9AUTH) += p9auth/ -obj-$(CONFIG_HECI) += heci/ obj-$(CONFIG_LINE6_USB) += line6/ obj-$(CONFIG_USB_SERIAL_QUATECH2) += serqt_usb2/ obj-$(CONFIG_USB_SERIAL_QUATECH_USB2) += quatech_usb2/ diff --git a/drivers/staging/heci/Kconfig b/drivers/staging/heci/Kconfig deleted file mode 100644 index c7206f8bcd93..000000000000 --- a/drivers/staging/heci/Kconfig +++ /dev/null @@ -1,7 +0,0 @@ -config HECI - tristate "Intel Management Engine Interface (MEI) Support" - depends on PCI - ---help--- - The Intel Management Engine Interface (Intel MEI) driver allows - applications to access the Active Management Technology - firmware and other Management Engine sub-systems. diff --git a/drivers/staging/heci/Makefile b/drivers/staging/heci/Makefile deleted file mode 100644 index 0524856fa3ab..000000000000 --- a/drivers/staging/heci/Makefile +++ /dev/null @@ -1,9 +0,0 @@ -obj-$(CONFIG_HECI) += heci.o - -heci-objs := \ - heci_init.o \ - interrupt.o \ - heci_interface.o \ - io_heci.o \ - heci_main.o - diff --git a/drivers/staging/heci/TODO b/drivers/staging/heci/TODO deleted file mode 100644 index f86715d631c4..000000000000 --- a/drivers/staging/heci/TODO +++ /dev/null @@ -1,6 +0,0 @@ -TODO: - - fix user/kernel pointer mess in the ioctl handlers as pointed - out by sparse. - - resolve the ioctls and see if most of them can just be simple - sysfs files - - fix locking issues that sparse points out at the least. diff --git a/drivers/staging/heci/heci.h b/drivers/staging/heci/heci.h deleted file mode 100644 index 48f120dc3b27..000000000000 --- a/drivers/staging/heci/heci.h +++ /dev/null @@ -1,175 +0,0 @@ -/* - * Part of Intel(R) Manageability Engine Interface Linux driver - * - * Copyright (c) 2003 - 2008 Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - * - */ - -#ifndef _HECI_H_ -#define _HECI_H_ - -#include <linux/spinlock.h> -#include <linux/list.h> -#include <linux/pci.h> -#include <linux/timer.h> -#include <linux/interrupt.h> -#include <linux/workqueue.h> -#include <linux/module.h> -#include <linux/aio.h> -#include <linux/types.h> -#include "heci_data_structures.h" - -extern const struct guid heci_pthi_guid; -extern const struct guid heci_wd_guid; -extern const __u8 heci_start_wd_params[]; -extern const __u8 heci_stop_wd_params[]; -extern const __u8 heci_wd_state_independence_msg[3][4]; - -/* - * heci device ID - */ -#define HECI_DEV_ID_82946GZ 0x2974 /* 82946GZ/GL */ -#define HECI_DEV_ID_82G35 0x2984 /* 82G35 Express */ -#define HECI_DEV_ID_82Q965 0x2994 /* 82Q963/Q965 */ -#define HECI_DEV_ID_82G965 0x29A4 /* 82P965/G965 */ - -#define HECI_DEV_ID_82GM965 0x2A04 /* Mobile PM965/GM965 */ -#define HECI_DEV_ID_82GME965 0x2A14 /* Mobile GME965/GLE960 */ - -#define HECI_DEV_ID_ICH9_82Q35 0x29B4 /* 82Q35 Express */ -#define HECI_DEV_ID_ICH9_82G33 0x29C4 /* 82G33/G31/P35/P31 Express */ -#define HECI_DEV_ID_ICH9_82Q33 0x29D4 /* 82Q33 Express */ -#define HECI_DEV_ID_ICH9_82X38 0x29E4 /* 82X38/X48 Express */ -#define HECI_DEV_ID_ICH9_3200 0x29F4 /* 3200/3210 Server */ - -#define HECI_DEV_ID_ICH9_6 0x28B4 /* Bearlake */ -#define HECI_DEV_ID_ICH9_7 0x28C4 /* Bearlake */ -#define HECI_DEV_ID_ICH9_8 0x28D4 /* Bearlake */ -#define HECI_DEV_ID_ICH9_9 0x28E4 /* Bearlake */ -#define HECI_DEV_ID_ICH9_10 0x28F4 /* Bearlake */ - -#define HECI_DEV_ID_ICH9M_1 0x2A44 /* Cantiga */ -#define HECI_DEV_ID_ICH9M_2 0x2A54 /* Cantiga */ -#define HECI_DEV_ID_ICH9M_3 0x2A64 /* Cantiga */ -#define HECI_DEV_ID_ICH9M_4 0x2A74 /* Cantiga */ - -#define HECI_DEV_ID_ICH10_1 0x2E04 /* Eaglelake */ -#define HECI_DEV_ID_ICH10_2 0x2E14 /* Eaglelake */ -#define HECI_DEV_ID_ICH10_3 0x2E24 /* Eaglelake */ -#define HECI_DEV_ID_ICH10_4 0x2E34 /* Eaglelake */ - -/* - * heci init function prototypes - */ -struct iamt_heci_device *init_heci_device(struct pci_dev *pdev); -void heci_reset(struct iamt_heci_device *dev, int interrupts); -int heci_hw_init(struct iamt_heci_device *dev); -int heci_task_initialize_clients(void *data); -int heci_initialize_clients(struct iamt_heci_device *dev); -struct heci_file_private *heci_alloc_file_private(struct file *file); -int heci_disconnect_host_client(struct iamt_heci_device *dev, - struct heci_file_private *file_ext); -void heci_initialize_list(struct io_heci_list *list, - struct iamt_heci_device *dev); -void heci_flush_list(struct io_heci_list *list, - struct heci_file_private *file_ext); -void heci_flush_queues(struct iamt_heci_device *dev, - struct heci_file_private *file_ext); - -void heci_remove_client_from_file_list(struct iamt_heci_device *dev, - __u8 host_client_id); - -/* - * interrupt function prototype - */ -irqreturn_t heci_isr_interrupt(int irq, void *dev_id); - -void heci_wd_timer(unsigned long data); - -/* - * input output function prototype - */ -int heci_ioctl_get_version(struct iamt_heci_device *dev, int if_num, - struct heci_message_data __user *u_msg, - struct heci_message_data k_msg, - struct heci_file_private *file_ext); - -int heci_ioctl_connect_client(struct iamt_heci_device *dev, int if_num, - struct heci_message_data __user *u_msg, - struct heci_message_data k_msg, - struct file *file); - -int heci_ioctl_wd(struct iamt_heci_device *dev, int if_num, - struct heci_message_data k_msg, - struct heci_file_private *file_ext); - -int heci_ioctl_bypass_wd(struct iamt_heci_device *dev, int if_num, - struct heci_message_data k_msg, - struct heci_file_private *file_ext); - -int heci_start_read(struct iamt_heci_device *dev, int if_num, - struct heci_file_private *file_ext); - -int pthi_write(struct iamt_heci_device *dev, - struct heci_cb_private *priv_cb); - -int pthi_read(struct iamt_heci_device *dev, int if_num, struct file *file, - char __user *ubuf, size_t length, loff_t *offset); - -struct heci_cb_private *find_pthi_read_list_entry( - struct iamt_heci_device *dev, - struct file *file); - -void run_next_iamthif_cmd(struct iamt_heci_device *dev); - -void heci_free_cb_private(struct heci_cb_private *priv_cb); - -/** - * heci_fe_same_id - tell if file private data have same id - * - * @fe1: private data of 1. file object - * @fe2: private data of 2. file object - * - * returns !=0 - if ids are the same, 0 - if differ. - */ -static inline int heci_fe_same_id(const struct heci_file_private *fe1, - const struct heci_file_private *fe2) -{ - return ((fe1->host_client_id == fe2->host_client_id) - && (fe1->me_client_id == fe2->me_client_id)); -} - -#endif /* _HECI_H_ */ diff --git a/drivers/staging/heci/heci_data_structures.h b/drivers/staging/heci/heci_data_structures.h deleted file mode 100644 index ff30386d097a..000000000000 --- a/drivers/staging/heci/heci_data_structures.h +++ /dev/null @@ -1,529 +0,0 @@ -/* - * Part of Intel(R) Manageability Engine Interface Linux driver - * - * Copyright (c) 2003 - 2008 Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - * - */ - -#ifndef _HECI_DATA_STRUCTURES_H_ -#define _HECI_DATA_STRUCTURES_H_ - -#include <linux/spinlock.h> -#include <linux/list.h> -#include <linux/pci.h> -#include <linux/timer.h> -#include <linux/interrupt.h> -#include <linux/workqueue.h> -#include <linux/module.h> -#include <linux/aio.h> -#include <linux/types.h> - -/* - * error code definition - */ -#define ESLOTS_OVERFLOW 1 -#define ECORRUPTED_MESSAGE_HEADER 1000 -#define ECOMPLETE_MESSAGE 1001 - -#define HECI_FC_MESSAGE_RESERVED_LENGTH 5 - -/* - * Number of queue lists used by this driver - */ -#define HECI_IO_LISTS_NUMBER 7 - -/* - * Maximum transmission unit (MTU) of heci messages - */ -#define IAMTHIF_MTU 4160 - - -/* - * HECI HW Section - */ - -/* HECI registers */ -/* H_CB_WW - Host Circular Buffer (CB) Write Window register */ -#define H_CB_WW 0 -/* H_CSR - Host Control Status register */ -#define H_CSR 4 -/* ME_CB_RW - ME Circular Buffer Read Window register (read only) */ -#define ME_CB_RW 8 -/* ME_CSR_HA - ME Control Status Host Access register (read only) */ -#define ME_CSR_HA 0xC - - -/* register bits of H_CSR (Host Control Status register) */ -/* Host Circular Buffer Depth - maximum number of 32-bit entries in CB */ -#define H_CBD 0xFF000000 -/* Host Circular Buffer Write Pointer */ -#define H_CBWP 0x00FF0000 -/* Host Circular Buffer Read Pointer */ -#define H_CBRP 0x0000FF00 -/* Host Reset */ -#define H_RST 0x00000010 -/* Host Ready */ -#define H_RDY 0x00000008 -/* Host Interrupt Generate */ -#define H_IG 0x00000004 -/* Host Interrupt Status */ -#define H_IS 0x00000002 -/* Host Interrupt Enable */ -#define H_IE 0x00000001 - - -/* register bits of ME_CSR_HA (ME Control Status Host Access register) */ -/* ME CB (Circular Buffer) Depth HRA (Host Read Access) - * - host read only access to ME_CBD */ -#define ME_CBD_HRA 0xFF000000 -/* ME CB Write Pointer HRA - host read only access to ME_CBWP */ -#define ME_CBWP_HRA 0x00FF0000 -/* ME CB Read Pointer HRA - host read only access to ME_CBRP */ -#define ME_CBRP_HRA 0x0000FF00 -/* ME Reset HRA - host read only access to ME_RST */ -#define ME_RST_HRA 0x00000010 -/* ME Ready HRA - host read only access to ME_RDY */ -#define ME_RDY_HRA 0x00000008 -/* ME Interrupt Generate HRA - host read only access to ME_IG */ -#define ME_IG_HRA 0x00000004 -/* ME Interrupt Status HRA - host read only access to ME_IS */ -#define ME_IS_HRA 0x00000002 -/* ME Interrupt Enable HRA - host read only access to ME_IE */ -#define ME_IE_HRA 0x00000001 - -#define HECI_MINORS_BASE 1 -#define HECI_MINORS_COUNT 1 - -#define HECI_MINOR_NUMBER 1 -#define HECI_MAX_OPEN_HANDLE_COUNT 253 - -/* - * debug kernel print macro define - */ -extern int heci_debug; - -#define DBG(format, arg...) do { \ - if (heci_debug) \ - printk(KERN_INFO "heci: %s: " format, __func__, ## arg); \ -} while (0) - - -/* - * time to wait HECI become ready after init - */ -#define HECI_INTEROP_TIMEOUT (HZ * 7) - -/* - * watch dog definition - */ -#define HECI_WATCHDOG_DATA_SIZE 16 -#define HECI_START_WD_DATA_SIZE 20 -#define HECI_WD_PARAMS_SIZE 4 -#define HECI_WD_STATE_INDEPENDENCE_MSG_SENT (1 << 0) - -#define HECI_WD_HOST_CLIENT_ID 1 -#define HECI_IAMTHIF_HOST_CLIENT_ID 2 - -struct guid { - __u32 data1; - __u16 data2; - __u16 data3; - __u8 data4[8]; -}; - -/* File state */ -enum file_state { - HECI_FILE_INITIALIZING = 0, - HECI_FILE_CONNECTING, - HECI_FILE_CONNECTED, - HECI_FILE_DISCONNECTING, - HECI_FILE_DISCONNECTED -}; - -/* HECI device states */ -enum heci_states { - HECI_INITIALIZING = 0, - HECI_ENABLED, - HECI_RESETING, - HECI_DISABLED, - HECI_RECOVERING_FROM_RESET, - HECI_POWER_DOWN, - HECI_POWER_UP -}; - -enum iamthif_states { - HECI_IAMTHIF_IDLE, - HECI_IAMTHIF_WRITING, - HECI_IAMTHIF_FLOW_CONTROL, - HECI_IAMTHIF_READING, - HECI_IAMTHIF_READ_COMPLETE -}; - -enum heci_file_transaction_states { - HECI_IDLE, - HECI_WRITING, - HECI_WRITE_COMPLETE, - HECI_FLOW_CONTROL, - HECI_READING, - HECI_READ_COMPLETE -}; - -/* HECI CB */ -enum heci_cb_major_types { - HECI_READ = 0, - HECI_WRITE, - HECI_IOCTL, - HECI_OPEN, - HECI_CLOSE -}; - -/* HECI user data struct */ -struct heci_message_data { - __u32 size; - char *data; -} __attribute__((packed)); - -#define HECI_CONNECT_TIMEOUT 3 /* at least 2 seconds */ - -#define IAMTHIF_STALL_TIMER 12 /* seconds */ -#define IAMTHIF_READ_TIMER 15 /* seconds */ - -struct heci_cb_private { - struct list_head cb_list; - enum heci_cb_major_types major_file_operations; - void *file_private; - struct heci_message_data request_buffer; - struct heci_message_data response_buffer; - unsigned long information; - unsigned long read_time; - struct file *file_object; -}; - -/* Private file struct */ -struct heci_file_private { - struct list_head link; - struct file *file; - enum file_state state; - wait_queue_head_t tx_wait; - wait_queue_head_t rx_wait; - wait_queue_head_t wait; - spinlock_t file_lock; /* file lock */ - spinlock_t read_io_lock; /* read lock */ - spinlock_t write_io_lock; /* write lock */ - int read_pending; - int status; - /* ID of client connected */ - __u8 host_client_id; - __u8 me_client_id; - __u8 flow_ctrl_creds; - __u8 timer_count; - enum heci_file_transaction_states reading_state; - enum heci_file_transaction_states writing_state; - int sm_state; - struct heci_cb_private *read_cb; -}; - -struct io_heci_list { - struct heci_cb_private heci_cb; - int status; - struct iamt_heci_device *device_extension; -}; - -struct heci_driver_version { - __u8 major; - __u8 minor; - __u8 hotfix; - __u16 build; -} __attribute__((packed)); - - -struct heci_client { - __u32 max_msg_length; - __u8 protocol_version; -} __attribute__((packed)); - -/* - * HECI BUS Interface Section - */ -struct heci_msg_hdr { - __u32 me_addr:8; - __u32 host_addr:8; - __u32 length:9; - __u32 reserved:6; - __u32 msg_complete:1; -} __attribute__((packed)); - - -struct hbm_cmd { - __u8 cmd:7; - __u8 is_response:1; -} __attribute__((packed)); - - -struct heci_bus_message { - struct hbm_cmd cmd; - __u8 command_specific_data[]; -} __attribute__((packed)); - -struct hbm_version { - __u8 minor_version; - __u8 major_version; -} __attribute__((packed)); - -struct hbm_host_version_request { - struct hbm_cmd cmd; - __u8 reserved; - struct hbm_version host_version; -} __attribute__((packed)); - -struct hbm_host_version_response { - struct hbm_cmd cmd; - int host_version_supported; - struct hbm_version me_max_version; -} __attribute__((packed)); - -struct hbm_host_stop_request { - struct hbm_cmd cmd; - __u8 reason; - __u8 reserved[2]; -} __attribute__((packed)); - -struct hbm_host_stop_response { - struct hbm_cmd cmd; - __u8 reserved[3]; -} __attribute__((packed)); - -struct hbm_me_stop_request { - struct hbm_cmd cmd; - __u8 reason; - __u8 reserved[2]; -} __attribute__((packed)); - -struct hbm_host_enum_request { - struct hbm_cmd cmd; - __u8 reserved[3]; -} __attribute__((packed)); - -struct hbm_host_enum_response { - struct hbm_cmd cmd; - __u8 reserved[3]; - __u8 valid_addresses[32]; -} __attribute__((packed)); - -struct heci_client_properties { - struct guid protocol_name; - __u8 protocol_version; - __u8 max_number_of_connections; - __u8 fixed_address; - __u8 single_recv_buf; - __u32 max_msg_length; -} __attribute__((packed)); - -struct hbm_props_request { - struct hbm_cmd cmd; - __u8 address; - __u8 reserved[2]; -} __attribute__((packed)); - - -struct hbm_props_response { - struct hbm_cmd cmd; - __u8 address; - __u8 status; - __u8 reserved[1]; - struct heci_client_properties client_properties; -} __attribute__((packed)); - -struct hbm_client_connect_request { - struct hbm_cmd cmd; - __u8 me_addr; - __u8 host_addr; - __u8 reserved; -} __attribute__((packed)); - -struct hbm_client_connect_response { - struct hbm_cmd cmd; - __u8 me_addr; - __u8 host_addr; - __u8 status; -} __attribute__((packed)); - -struct hbm_client_disconnect_request { - struct hbm_cmd cmd; - __u8 me_addr; - __u8 host_addr; - __u8 reserved[1]; -} __attribute__((packed)); - -struct hbm_flow_control { - struct hbm_cmd cmd; - __u8 me_addr; - __u8 host_addr; - __u8 reserved[HECI_FC_MESSAGE_RESERVED_LENGTH]; -} __attribute__((packed)); - -struct heci_me_client { - struct heci_client_properties props; - __u8 client_id; - __u8 flow_ctrl_creds; -} __attribute__((packed)); - -/* private device struct */ -struct iamt_heci_device { - struct pci_dev *pdev; /* pointer to pci device struct */ - /* - * lists of queues - */ - /* array of pointers to aio lists */ - struct io_heci_list *io_list_array[HECI_IO_LISTS_NUMBER]; - struct io_heci_list read_list; /* driver read queue */ - struct io_heci_list write_list; /* driver write queue */ - struct io_heci_list write_waiting_list; /* write waiting queue */ - struct io_heci_list ctrl_wr_list; /* managed write IOCTL list */ - struct io_heci_list ctrl_rd_list; /* managed read IOCTL list */ - struct io_heci_list pthi_cmd_list; /* PTHI list for cmd waiting */ - - /* driver managed PTHI list for reading completed pthi cmd data */ - struct io_heci_list pthi_read_complete_list; - /* - * list of files - */ - struct list_head file_list; - /* - * memory of device - */ - unsigned int mem_base; - unsigned int mem_length; - void __iomem *mem_addr; - /* - * lock for the device - */ - spinlock_t device_lock; /* device lock*/ - struct work_struct work; - int recvd_msg; - - struct task_struct *reinit_tsk; - - struct timer_list wd_timer; - /* - * hw states of host and fw(ME) - */ - __u32 host_hw_state; - __u32 me_hw_state; - /* - * waiting queue for receive message from FW - */ - wait_queue_head_t wait_recvd_msg; - wait_queue_head_t wait_stop_wd; - /* - * heci device states - */ - enum heci_states heci_state; - int stop; - - __u32 extra_write_index; - __u32 rd_msg_buf[128]; /* used for control messages */ - __u32 wr_msg_buf[128]; /* used for control messages */ - __u32 ext_msg_buf[8]; /* for control responses */ - __u32 rd_msg_hdr; - - struct hbm_version version; - - int host_buffer_is_empty; - struct heci_file_private wd_file_ext; - struct heci_me_client *me_clients; /* Note: memory has to be allocated*/ - __u8 heci_me_clients[32]; /* list of existing clients */ - __u8 num_heci_me_clients; - __u8 heci_host_clients[32]; /* list of existing clients */ - __u8 current_host_client_id; - - int wd_pending; - int wd_stoped; - __u16 wd_timeout; /* seconds ((wd_data[1] << 8) + wd_data[0]) */ - unsigned char wd_data[HECI_START_WD_DATA_SIZE]; - - - __u16 wd_due_counter; - int asf_mode; - int wd_bypass; /* if 1, don't refresh watchdog ME client */ - - struct file *iamthif_file_object; - struct heci_file_private iamthif_file_ext; - int iamthif_ioctl; - int iamthif_canceled; - __u32 iamthif_timer; - __u32 iamthif_stall_timer; - unsigned char iamthif_msg_buf[IAMTHIF_MTU]; - __u32 iamthif_msg_buf_size; - __u32 iamthif_msg_buf_index; - int iamthif_flow_control_pending; - enum iamthif_states iamthif_state; - - struct heci_cb_private *iamthif_current_cb; - __u8 write_hang; - int need_reset; - long open_handle_count; - -}; - -/** - * read_heci_register - Read a byte from the heci device - * - * @dev: the device structure - * @offset: offset from which to read the data - * - * returns the byte read. - */ -static inline __u32 read_heci_register(struct iamt_heci_device *dev, - unsigned long offset) -{ - return readl(dev->mem_addr + offset); -} - -/** - * write_heci_register - Write 4 bytes to the heci device - * - * @dev: the device structure - * @offset: offset from which to write the data - * @value: the byte to write - */ -static inline void write_heci_register(struct iamt_heci_device *dev, - unsigned long offset, __u32 value) -{ - writel(value, dev->mem_addr + offset); -} - -#endif /* _HECI_DATA_STRUCTURES_H_ */ diff --git a/drivers/staging/heci/heci_init.c b/drivers/staging/heci/heci_init.c deleted file mode 100644 index 31fd891c099d..000000000000 --- a/drivers/staging/heci/heci_init.c +++ /dev/null @@ -1,1083 +0,0 @@ -/* - * Part of Intel(R) Manageability Engine Interface Linux driver - * - * Copyright (c) 2003 - 2008 Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - * - */ - -#include <linux/module.h> -#include <linux/pci.h> -#include <linux/reboot.h> -#include <linux/poll.h> -#include <linux/init.h> -#include <linux/kdev_t.h> -#include <linux/moduleparam.h> -#include <linux/wait.h> -#include <linux/delay.h> -#include <linux/kthread.h> - -#include "heci_data_structures.h" -#include "heci_interface.h" -#include "heci.h" - - -const __u8 heci_start_wd_params[] = { 0x02, 0x12, 0x13, 0x10 }; -const __u8 heci_stop_wd_params[] = { 0x02, 0x02, 0x14, 0x10 }; - -const __u8 heci_wd_state_independence_msg[3][4] = { - {0x05, 0x02, 0x51, 0x10}, - {0x05, 0x02, 0x52, 0x10}, - {0x07, 0x02, 0x01, 0x10} -}; - -static const struct guid heci_asf_guid = { - 0x75B30CD6, 0xA29E, 0x4AF7, - {0xA7, 0x12, 0xE6, 0x17, 0x43, 0x93, 0xC8, 0xA6} -}; -const struct guid heci_wd_guid = { - 0x05B79A6F, 0x4628, 0x4D7F, - {0x89, 0x9D, 0xA9, 0x15, 0x14, 0xCB, 0x32, 0xAB} -}; -const struct guid heci_pthi_guid = { - 0x12f80028, 0xb4b7, 0x4b2d, - {0xac, 0xa8, 0x46, 0xe0, 0xff, 0x65, 0x81, 0x4c} -}; - - -/* - * heci init function prototypes - */ -static void heci_check_asf_mode(struct iamt_heci_device *dev); -static int host_start_message(struct iamt_heci_device *dev); -static int host_enum_clients_message(struct iamt_heci_device *dev); -static int allocate_me_clients_storage(struct iamt_heci_device *dev); -static void host_init_wd(struct iamt_heci_device *dev); -static void host_init_iamthif(struct iamt_heci_device *dev); -static int heci_wait_event_int_timeout(struct iamt_heci_device *dev, - long timeout); - - -/** - * heci_initialize_list - Sets up a queue list. - * - * @list: An instance of our list structure - * @dev: Device object for our driver - */ -void heci_initialize_list(struct io_heci_list *list, - struct iamt_heci_device *dev) -{ - /* initialize our queue list */ - INIT_LIST_HEAD(&list->heci_cb.cb_list); - list->status = 0; - list->device_extension = dev; -} - -/** - * heci_flush_queues - flush our queues list belong to file_ext. - * - * @dev: Device object for our driver - * @file_ext: private data of the file object - */ -void heci_flush_queues(struct iamt_heci_device *dev, - struct heci_file_private *file_ext) -{ - int i; - - if (!dev || !file_ext) - return; - - /* flush our queue list belong to file_ext */ - for (i = 0; i < HECI_IO_LISTS_NUMBER; i++) { - DBG("remove list entry belong to file_ext\n"); - heci_flush_list(dev->io_list_array[i], file_ext); - } -} - - -/** - * heci_flush_list - remove list entry belong to file_ext. - * - * @list: An instance of our list structure - * @file_ext: private data of the file object - */ -void heci_flush_list(struct io_heci_list *list, - struct heci_file_private *file_ext) -{ - struct heci_file_private *file_ext_tmp; - struct heci_cb_private *priv_cb_pos = NULL; - struct heci_cb_private *priv_cb_next = NULL; - - if (!list || !file_ext) - return; - - if (list->status != 0) - return; - - if (list_empty(&list->heci_cb.cb_list)) - return; - - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - &list->heci_cb.cb_list, cb_list) { - if (priv_cb_pos) { - file_ext_tmp = (struct heci_file_private *) - priv_cb_pos->file_private; - if (file_ext_tmp) { - if (heci_fe_same_id(file_ext, file_ext_tmp)) - list_del(&priv_cb_pos->cb_list); - } - } - } -} - -/** - * heci_reset_iamthif_params - initializes heci device iamthif - * - * @dev: The heci device structure - */ -static void heci_reset_iamthif_params(struct iamt_heci_device *dev) -{ - /* reset iamthif parameters. */ - dev->iamthif_current_cb = NULL; - dev->iamthif_msg_buf_size = 0; - dev->iamthif_msg_buf_index = 0; - dev->iamthif_canceled = 0; - dev->iamthif_file_ext.file = NULL; - dev->iamthif_ioctl = 0; - dev->iamthif_state = HECI_IAMTHIF_IDLE; - dev->iamthif_timer = 0; -} - -/** - * init_heci_device - allocates and initializes the heci device structure - * - * @pdev: The pci device structure - * - * returns The heci_device_device pointer on success, NULL on failure. - */ -struct iamt_heci_device *init_heci_device(struct pci_dev *pdev) -{ - int i; - struct iamt_heci_device *dev; - - dev = kzalloc(sizeof(struct iamt_heci_device), GFP_KERNEL); - if (!dev) - return NULL; - - /* setup our list array */ - dev->io_list_array[0] = &dev->read_list; - dev->io_list_array[1] = &dev->write_list; - dev->io_list_array[2] = &dev->write_waiting_list; - dev->io_list_array[3] = &dev->ctrl_wr_list; - dev->io_list_array[4] = &dev->ctrl_rd_list; - dev->io_list_array[5] = &dev->pthi_cmd_list; - dev->io_list_array[6] = &dev->pthi_read_complete_list; - INIT_LIST_HEAD(&dev->file_list); - INIT_LIST_HEAD(&dev->wd_file_ext.link); - INIT_LIST_HEAD(&dev->iamthif_file_ext.link); - spin_lock_init(&dev->device_lock); - init_waitqueue_head(&dev->wait_recvd_msg); - init_waitqueue_head(&dev->wait_stop_wd); - dev->heci_state = HECI_INITIALIZING; - dev->iamthif_state = HECI_IAMTHIF_IDLE; - - /* init work for schedule work */ - INIT_WORK(&dev->work, NULL); - for (i = 0; i < HECI_IO_LISTS_NUMBER; i++) - heci_initialize_list(dev->io_list_array[i], dev); - dev->pdev = pdev; - return dev; -} - - - - -static int heci_wait_event_int_timeout(struct iamt_heci_device *dev, - long timeout) -{ - return wait_event_interruptible_timeout(dev->wait_recvd_msg, - (dev->recvd_msg), timeout); -} - -/** - * heci_hw_init - init host and fw to start work. - * - * @dev: Device object for our driver - * - * returns 0 on success, <0 on failure. - */ -int heci_hw_init(struct iamt_heci_device *dev) -{ - int err = 0; - - dev->host_hw_state = read_heci_register(dev, H_CSR); - dev->me_hw_state = read_heci_register(dev, ME_CSR_HA); - DBG("host_hw_state = 0x%08x, mestate = 0x%08x.\n", - dev->host_hw_state, dev->me_hw_state); - - if ((dev->host_hw_state & H_IS) == H_IS) { - /* acknowledge interrupt and stop interupts */ - heci_csr_clear_his(dev); - } - dev->recvd_msg = 0; - DBG("reset in start the heci device.\n"); - - heci_reset(dev, 1); - - DBG("host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", - dev->host_hw_state, dev->me_hw_state); - - /* wait for ME to turn on ME_RDY */ - if (!dev->recvd_msg) - err = heci_wait_event_int_timeout(dev, HECI_INTEROP_TIMEOUT); - - if (!err && !dev->recvd_msg) { - dev->heci_state = HECI_DISABLED; - DBG("wait_event_interruptible_timeout failed" - "on wait for ME to turn on ME_RDY.\n"); - return -ENODEV; - } else { - if (!(((dev->host_hw_state & H_RDY) == H_RDY) - && ((dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA))) { - dev->heci_state = HECI_DISABLED; - DBG("host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", - dev->host_hw_state, - dev->me_hw_state); - - if (!(dev->host_hw_state & H_RDY) != H_RDY) - DBG("host turn off H_RDY.\n"); - - if (!(dev->me_hw_state & ME_RDY_HRA) != ME_RDY_HRA) - DBG("ME turn off ME_RDY.\n"); - - printk(KERN_ERR - "heci: link layer initialization failed.\n"); - return -ENODEV; - } - } - dev->recvd_msg = 0; - DBG("host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", - dev->host_hw_state, dev->me_hw_state); - DBG("ME turn on ME_RDY and host turn on H_RDY.\n"); - printk(KERN_INFO "heci: link layer has been established.\n"); - return 0; -} - -/** - * heci_hw_reset - reset fw via heci csr register. - * - * @dev: Device object for our driver - * @interrupts: if interrupt should be enable after reset. - */ -static void heci_hw_reset(struct iamt_heci_device *dev, int interrupts) -{ - dev->host_hw_state |= (H_RST | H_IG); - - if (interrupts) - heci_csr_enable_interrupts(dev); - else - heci_csr_disable_interrupts(dev); - - BUG_ON((dev->host_hw_state & H_RST) != H_RST); - BUG_ON((dev->host_hw_state & H_RDY) != 0); -} - -/** - * heci_reset - reset host and fw. - * - * @dev: Device object for our driver - * @interrupts: if interrupt should be enable after reset. - */ -void heci_reset(struct iamt_heci_device *dev, int interrupts) -{ - struct heci_file_private *file_pos = NULL; - struct heci_file_private *file_next = NULL; - struct heci_cb_private *priv_cb_pos = NULL; - struct heci_cb_private *priv_cb_next = NULL; - int unexpected = 0; - - if (dev->heci_state == HECI_RECOVERING_FROM_RESET) { - dev->need_reset = 1; - return; - } - - if (dev->heci_state != HECI_INITIALIZING && - dev->heci_state != HECI_DISABLED && - dev->heci_state != HECI_POWER_DOWN && - dev->heci_state != HECI_POWER_UP) - unexpected = 1; - - if (dev->reinit_tsk != NULL) { - kthread_stop(dev->reinit_tsk); - dev->reinit_tsk = NULL; - } - - dev->host_hw_state = read_heci_register(dev, H_CSR); - - DBG("before reset host_hw_state = 0x%08x.\n", - dev->host_hw_state); - - heci_hw_reset(dev, interrupts); - - dev->host_hw_state &= ~H_RST; - dev->host_hw_state |= H_IG; - - heci_set_csr_register(dev); - - DBG("currently saved host_hw_state = 0x%08x.\n", - dev->host_hw_state); - - dev->need_reset = 0; - - if (dev->heci_state != HECI_INITIALIZING) { - if ((dev->heci_state != HECI_DISABLED) && - (dev->heci_state != HECI_POWER_DOWN)) - dev->heci_state = HECI_RESETING; - - list_for_each_entry_safe(file_pos, - file_next, &dev->file_list, link) { - file_pos->state = HECI_FILE_DISCONNECTED; - file_pos->flow_ctrl_creds = 0; - file_pos->read_cb = NULL; - file_pos->timer_count = 0; - } - /* remove entry if already in list */ - DBG("list del iamthif and wd file list.\n"); - heci_remove_client_from_file_list(dev, - dev->wd_file_ext.host_client_id); - - heci_remove_client_from_file_list(dev, - dev->iamthif_file_ext.host_client_id); - - heci_reset_iamthif_params(dev); - dev->wd_due_counter = 0; - dev->extra_write_index = 0; - } - - dev->num_heci_me_clients = 0; - dev->rd_msg_hdr = 0; - dev->stop = 0; - dev->wd_pending = 0; - - /* update the state of the registers after reset */ - dev->host_hw_state = read_heci_register(dev, H_CSR); - dev->me_hw_state = read_heci_register(dev, ME_CSR_HA); - - DBG("after reset host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n", - dev->host_hw_state, dev->me_hw_state); - - if (unexpected) - printk(KERN_WARNING "heci: unexpected reset.\n"); - - /* Wake up all readings so they can be interrupted */ - list_for_each_entry_safe(file_pos, file_next, &dev->file_list, link) { - if (&file_pos->rx_wait && - waitqueue_active(&file_pos->rx_wait)) { - printk(KERN_INFO "heci: Waking up client!\n"); - wake_up_interruptible(&file_pos->rx_wait); - } - } - /* remove all waiting requests */ - if (dev->write_list.status == 0 && - !list_empty(&dev->write_list.heci_cb.cb_list)) { - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - &dev->write_list.heci_cb.cb_list, cb_list) { - if (priv_cb_pos) { - list_del(&priv_cb_pos->cb_list); - heci_free_cb_private(priv_cb_pos); - } - } - } -} - -/** - * heci_initialize_clients - heci communication initialization. - * - * @dev: Device object for our driver - */ -int heci_initialize_clients(struct iamt_heci_device *dev) -{ - int status; - - msleep(100); /* FW needs time to be ready to talk with us */ - DBG("link is established start sending messages.\n"); - /* link is established start sending messages. */ - status = host_start_message(dev); - if (status != 0) { - spin_lock_bh(&dev->device_lock); - dev->heci_state = HECI_DISABLED; - spin_unlock_bh(&dev->device_lock); - DBG("start sending messages failed.\n"); - return status; - } - - /* enumerate clients */ - status = host_enum_clients_message(dev); - if (status != 0) { - spin_lock_bh(&dev->device_lock); - dev->heci_state = HECI_DISABLED; - spin_unlock_bh(&dev->device_lock); - DBG("enum clients failed.\n"); - return status; - } - /* allocate storage for ME clients representation */ - status = allocate_me_clients_storage(dev); - if (status != 0) { - spin_lock_bh(&dev->device_lock); - dev->num_heci_me_clients = 0; - dev->heci_state = HECI_DISABLED; - spin_unlock_bh(&dev->device_lock); - DBG("allocate clients failed.\n"); - return status; - } - - heci_check_asf_mode(dev); - /*heci initialization wd */ - host_init_wd(dev); - /*heci initialization iamthif client */ - host_init_iamthif(dev); - - spin_lock_bh(&dev->device_lock); - if (dev->need_reset) { - dev->need_reset = 0; - dev->heci_state = HECI_DISABLED; - spin_unlock_bh(&dev->device_lock); - return -ENODEV; - } - - memset(dev->heci_host_clients, 0, sizeof(dev->heci_host_clients)); - dev->open_handle_count = 0; - dev->heci_host_clients[0] |= 7; - dev->current_host_client_id = 3; - dev->heci_state = HECI_ENABLED; - spin_unlock_bh(&dev->device_lock); - DBG("initialization heci clients successful.\n"); - return 0; -} - -/** - * heci_task_initialize_clients - heci reinitialization task - * - * @data: Device object for our driver - */ -int heci_task_initialize_clients(void *data) -{ - int ret; - struct iamt_heci_device *dev = (struct iamt_heci_device *) data; - - spin_lock_bh(&dev->device_lock); - if (dev->reinit_tsk != NULL) { - spin_unlock_bh(&dev->device_lock); - DBG("reinit task already started.\n"); - return 0; - } - dev->reinit_tsk = current; - current->flags |= PF_NOFREEZE; - spin_unlock_bh(&dev->device_lock); - - ret = heci_initialize_clients(dev); - - spin_lock_bh(&dev->device_lock); - dev->reinit_tsk = NULL; - spin_unlock_bh(&dev->device_lock); - - return ret; -} - -/** - * host_start_message - heci host send start message. - * - * @dev: Device object for our driver - * - * returns 0 on success, <0 on failure. - */ -static int host_start_message(struct iamt_heci_device *dev) -{ - long timeout = 60; /* 60 second */ - - struct heci_msg_hdr *heci_hdr; - struct hbm_host_version_request *host_start_req; - struct hbm_host_stop_request *host_stop_req; - int err = 0; - - /* host start message */ - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - heci_hdr->host_addr = 0; - heci_hdr->me_addr = 0; - heci_hdr->length = sizeof(struct hbm_host_version_request); - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - - host_start_req = - (struct hbm_host_version_request *) &dev->wr_msg_buf[1]; - memset(host_start_req, 0, sizeof(struct hbm_host_version_request)); - host_start_req->cmd.cmd = HOST_START_REQ_CMD; - host_start_req->host_version.major_version = HBM_MAJOR_VERSION; - host_start_req->host_version.minor_version = HBM_MINOR_VERSION; - dev->recvd_msg = 0; - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) (host_start_req), - heci_hdr->length)) { - DBG("send version to fw fail.\n"); - return -ENODEV; - } - DBG("call wait_event_interruptible_timeout for response message.\n"); - /* wait for response */ - err = heci_wait_event_int_timeout(dev, timeout * HZ); - if (!err && !dev->recvd_msg) { - DBG("wait_timeout failed on host start response message.\n"); - return -ENODEV; - } - dev->recvd_msg = 0; - DBG("wait_timeout successful on host start response message.\n"); - if ((dev->version.major_version != HBM_MAJOR_VERSION) || - (dev->version.minor_version != HBM_MINOR_VERSION)) { - /* send stop message */ - heci_hdr->host_addr = 0; - heci_hdr->me_addr = 0; - heci_hdr->length = sizeof(struct hbm_host_stop_request); - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - - host_stop_req = - (struct hbm_host_stop_request *) &dev->wr_msg_buf[1]; - - memset(host_stop_req, 0, sizeof(struct hbm_host_stop_request)); - host_stop_req->cmd.cmd = HOST_STOP_REQ_CMD; - host_stop_req->reason = DRIVER_STOP_REQUEST; - heci_write_message(dev, heci_hdr, - (unsigned char *) (host_stop_req), - heci_hdr->length); - DBG("version mismatch.\n"); - return -ENODEV; - } - - return 0; -} - -/** - * host_enum_clients_message - host send enumeration client request message. - * - * @dev: Device object for our driver - * - * returns 0 on success, <0 on failure. - */ -static int host_enum_clients_message(struct iamt_heci_device *dev) -{ - long timeout = 5; /*5 second */ - struct heci_msg_hdr *heci_hdr; - struct hbm_host_enum_request *host_enum_req; - int err = 0; - int i, j; - - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - /* enumerate clients */ - heci_hdr->host_addr = 0; - heci_hdr->me_addr = 0; - heci_hdr->length = sizeof(struct hbm_host_enum_request); - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - - host_enum_req = (struct hbm_host_enum_request *) &dev->wr_msg_buf[1]; - memset(host_enum_req, 0, sizeof(struct hbm_host_enum_request)); - host_enum_req->cmd.cmd = HOST_ENUM_REQ_CMD; - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) (host_enum_req), - heci_hdr->length)) { - DBG("send enumeration request failed.\n"); - return -ENODEV; - } - /* wait for response */ - dev->recvd_msg = 0; - err = heci_wait_event_int_timeout(dev, timeout * HZ); - if (!err && !dev->recvd_msg) { - DBG("wait_event_interruptible_timeout failed " - "on enumeration clients response message.\n"); - return -ENODEV; - } - dev->recvd_msg = 0; - - spin_lock_bh(&dev->device_lock); - /* count how many ME clients we have */ - for (i = 0; i < sizeof(dev->heci_me_clients); i++) { - for (j = 0; j < 8; j++) { - if ((dev->heci_me_clients[i] & (1 << j)) != 0) - dev->num_heci_me_clients++; - - } - } - spin_unlock_bh(&dev->device_lock); - - return 0; -} - -/** - * host_client_properties - reads properties for client - * - * @dev: Device object for our driver - * @idx: client index in me client array - * @client_id: id of the client - * - * returns 0 on success, <0 on failure. - */ -static int host_client_properties(struct iamt_heci_device *dev, - struct heci_me_client *client) -{ - struct heci_msg_hdr *heci_hdr; - struct hbm_props_request *host_cli_req; - int err; - - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - heci_hdr->host_addr = 0; - heci_hdr->me_addr = 0; - heci_hdr->length = sizeof(struct hbm_props_request); - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - - host_cli_req = (struct hbm_props_request *) &dev->wr_msg_buf[1]; - memset(host_cli_req, 0, sizeof(struct hbm_props_request)); - host_cli_req->cmd.cmd = HOST_CLIENT_PROPERTEIS_REQ_CMD; - host_cli_req->address = client->client_id; - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) (host_cli_req), - heci_hdr->length)) { - DBG("send props request failed.\n"); - return -ENODEV; - } - /* wait for response */ - dev->recvd_msg = 0; - err = heci_wait_event_int_timeout(dev, 10 * HZ); - if (!err && !dev->recvd_msg) { - DBG("wait failed on props resp msg.\n"); - return -ENODEV; - } - dev->recvd_msg = 0; - return 0; -} - -/** - * allocate_me_clients_storage - allocate storage for me clients - * - * @dev: Device object for our driver - * - * returns 0 on success, <0 on failure. - */ -static int allocate_me_clients_storage(struct iamt_heci_device *dev) -{ - struct heci_me_client *clients; - struct heci_me_client *client; - __u8 num, i, j; - int err; - - if (dev->num_heci_me_clients <= 0) - return 0; - - spin_lock_bh(&dev->device_lock); - kfree(dev->me_clients); - dev->me_clients = NULL; - spin_unlock_bh(&dev->device_lock); - - /* allocate storage for ME clients representation */ - clients = kcalloc(dev->num_heci_me_clients, - sizeof(struct heci_me_client), GFP_KERNEL); - if (!clients) { - DBG("memory allocation for ME clients failed.\n"); - return -ENOMEM; - } - - spin_lock_bh(&dev->device_lock); - dev->me_clients = clients; - spin_unlock_bh(&dev->device_lock); - - num = 0; - for (i = 0; i < sizeof(dev->heci_me_clients); i++) { - for (j = 0; j < 8; j++) { - if ((dev->heci_me_clients[i] & (1 << j)) != 0) { - client = &dev->me_clients[num]; - client->client_id = (i * 8) + j; - client->flow_ctrl_creds = 0; - err = host_client_properties(dev, client); - if (err != 0) { - spin_lock_bh(&dev->device_lock); - kfree(dev->me_clients); - dev->me_clients = NULL; - spin_unlock_bh(&dev->device_lock); - return err; - } - num++; - } - } - } - - return 0; -} - -/** - * heci_init_file_private - initializes private file structure. - * - * @priv: private file structure to be initialized - * @file: the file structure - */ -static void heci_init_file_private(struct heci_file_private *priv, - struct file *file) -{ - memset(priv, 0, sizeof(struct heci_file_private)); - spin_lock_init(&priv->file_lock); - spin_lock_init(&priv->read_io_lock); - spin_lock_init(&priv->write_io_lock); - init_waitqueue_head(&priv->wait); - init_waitqueue_head(&priv->rx_wait); - DBG("priv->rx_wait =%p\n", &priv->rx_wait); - init_waitqueue_head(&priv->tx_wait); - INIT_LIST_HEAD(&priv->link); - priv->reading_state = HECI_IDLE; - priv->writing_state = HECI_IDLE; -} - -/** - * heci_find_me_client - search for ME client guid - * sets client_id in heci_file_private if found - * @dev: Device object for our driver - * @priv: private file structure to set client_id in - * @cguid: searched guid of ME client - * @client_id: id of host client to be set in file private structure - * - * returns ME client index - */ -static __u8 heci_find_me_client(struct iamt_heci_device *dev, - struct heci_file_private *priv, - const struct guid *cguid, __u8 client_id) -{ - __u8 i; - - if ((dev == NULL) || (priv == NULL) || (cguid == NULL)) - return 0; - - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (memcmp(cguid, - &dev->me_clients[i].props.protocol_name, - sizeof(struct guid)) == 0) { - priv->me_client_id = dev->me_clients[i].client_id; - priv->state = HECI_FILE_CONNECTING; - priv->host_client_id = client_id; - - list_add_tail(&priv->link, &dev->file_list); - return i; - } - } - return 0; -} - -/** - * heci_check_asf_mode - check for ASF client - * - * @dev: Device object for our driver - */ -static void heci_check_asf_mode(struct iamt_heci_device *dev) -{ - __u8 i; - - spin_lock_bh(&dev->device_lock); - dev->asf_mode = 0; - /* find ME ASF client - otherwise assume AMT mode */ - DBG("find ME ASF client - otherwise assume AMT mode.\n"); - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (memcmp(&heci_asf_guid, - &dev->me_clients[i].props.protocol_name, - sizeof(struct guid)) == 0) { - dev->asf_mode = 1; - spin_unlock_bh(&dev->device_lock); - DBG("found ME ASF client.\n"); - return; - } - } - spin_unlock_bh(&dev->device_lock); - DBG("assume AMT mode.\n"); -} - -/** - * heci_connect_me_client - connect ME client - * @dev: Device object for our driver - * @priv: private file structure - * @timeout: connect timeout in seconds - * - * returns 1 - if connected, 0 - if not - */ -static __u8 heci_connect_me_client(struct iamt_heci_device *dev, - struct heci_file_private *priv, - long timeout) -{ - int err = 0; - - if ((dev == NULL) || (priv == NULL)) - return 0; - - if (!heci_connect(dev, priv)) { - DBG("failed to call heci_connect for client_id=%d.\n", - priv->host_client_id); - spin_lock_bh(&dev->device_lock); - heci_remove_client_from_file_list(dev, priv->host_client_id); - priv->state = HECI_FILE_DISCONNECTED; - spin_unlock_bh(&dev->device_lock); - return 0; - } - - err = wait_event_timeout(dev->wait_recvd_msg, - (HECI_FILE_CONNECTED == priv->state || - HECI_FILE_DISCONNECTED == priv->state), - timeout * HZ); - if (HECI_FILE_CONNECTED != priv->state) { - spin_lock_bh(&dev->device_lock); - heci_remove_client_from_file_list(dev, priv->host_client_id); - DBG("failed to connect client_id=%d state=%d.\n", - priv->host_client_id, priv->state); - if (err) - DBG("failed connect err=%08x\n", err); - priv->state = HECI_FILE_DISCONNECTED; - spin_unlock_bh(&dev->device_lock); - return 0; - } - DBG("successfully connected client_id=%d.\n", - priv->host_client_id); - return 1; -} - -/** - * host_init_wd - heci initialization wd. - * - * @dev: Device object for our driver - */ -static void host_init_wd(struct iamt_heci_device *dev) -{ - spin_lock_bh(&dev->device_lock); - - heci_init_file_private(&dev->wd_file_ext, NULL); - - /* look for WD client and connect to it */ - dev->wd_file_ext.state = HECI_FILE_DISCONNECTED; - dev->wd_timeout = 0; - - if (dev->asf_mode) { - memcpy(dev->wd_data, heci_stop_wd_params, HECI_WD_PARAMS_SIZE); - } else { - /* AMT mode */ - dev->wd_timeout = AMT_WD_VALUE; - DBG("dev->wd_timeout=%d.\n", dev->wd_timeout); - memcpy(dev->wd_data, heci_start_wd_params, HECI_WD_PARAMS_SIZE); - memcpy(dev->wd_data + HECI_WD_PARAMS_SIZE, - &dev->wd_timeout, sizeof(__u16)); - } - - /* find ME WD client */ - heci_find_me_client(dev, &dev->wd_file_ext, - &heci_wd_guid, HECI_WD_HOST_CLIENT_ID); - spin_unlock_bh(&dev->device_lock); - - DBG("check wd_file_ext\n"); - if (HECI_FILE_CONNECTING == dev->wd_file_ext.state) { - if (heci_connect_me_client(dev, &dev->wd_file_ext, 15) == 1) { - DBG("dev->wd_timeout=%d.\n", dev->wd_timeout); - if (dev->wd_timeout != 0) - dev->wd_due_counter = 1; - else - dev->wd_due_counter = 0; - DBG("successfully connected to WD client.\n"); - } - } else - DBG("failed to find WD client.\n"); - - - spin_lock_bh(&dev->device_lock); - dev->wd_timer.function = &heci_wd_timer; - dev->wd_timer.data = (unsigned long) dev; - spin_unlock_bh(&dev->device_lock); -} - - -/** - * host_init_iamthif - heci initialization iamthif client. - * - * @dev: Device object for our driver - * - */ -static void host_init_iamthif(struct iamt_heci_device *dev) -{ - __u8 i; - - spin_lock_bh(&dev->device_lock); - - heci_init_file_private(&dev->iamthif_file_ext, NULL); - dev->iamthif_file_ext.state = HECI_FILE_DISCONNECTED; - - /* find ME PTHI client */ - i = heci_find_me_client(dev, &dev->iamthif_file_ext, - &heci_pthi_guid, HECI_IAMTHIF_HOST_CLIENT_ID); - if (dev->iamthif_file_ext.state != HECI_FILE_CONNECTING) { - DBG("failed to find iamthif client.\n"); - spin_unlock_bh(&dev->device_lock); - return; - } - - BUG_ON(dev->me_clients[i].props.max_msg_length != IAMTHIF_MTU); - - spin_unlock_bh(&dev->device_lock); - if (heci_connect_me_client(dev, &dev->iamthif_file_ext, 15) == 1) { - DBG("connected to iamthif client.\n"); - dev->iamthif_state = HECI_IAMTHIF_IDLE; - } -} - -/** - * heci_alloc_file_private - allocates a private file structure and set it up. - * @file: the file structure - * - * returns The allocated file or NULL on failure - */ -struct heci_file_private *heci_alloc_file_private(struct file *file) -{ - struct heci_file_private *priv; - - priv = kmalloc(sizeof(struct heci_file_private), GFP_KERNEL); - if (!priv) - return NULL; - - heci_init_file_private(priv, file); - - return priv; -} - - - -/** - * heci_disconnect_host_client - send disconnect message to fw from host client. - * - * @dev: Device object for our driver - * @file_ext: private data of the file object - * - * returns 0 on success, <0 on failure. - */ -int heci_disconnect_host_client(struct iamt_heci_device *dev, - struct heci_file_private *file_ext) -{ - int rets, err; - long timeout = 15; /* 15 seconds */ - struct heci_cb_private *priv_cb; - - if ((!dev) || (!file_ext)) - return -ENODEV; - - spin_lock_bh(&dev->device_lock); - if (file_ext->state != HECI_FILE_DISCONNECTING) { - spin_unlock_bh(&dev->device_lock); - return 0; - } - spin_unlock_bh(&dev->device_lock); - - priv_cb = kzalloc(sizeof(struct heci_cb_private), GFP_KERNEL); - if (!priv_cb) - return -ENOMEM; - - INIT_LIST_HEAD(&priv_cb->cb_list); - priv_cb->file_private = file_ext; - priv_cb->major_file_operations = HECI_CLOSE; - spin_lock_bh(&dev->device_lock); - if (dev->host_buffer_is_empty) { - dev->host_buffer_is_empty = 0; - if (heci_disconnect(dev, file_ext)) { - mdelay(10); /* Wait for hardware disconnection ready */ - list_add_tail(&priv_cb->cb_list, - &dev->ctrl_rd_list.heci_cb.cb_list); - } else { - spin_unlock_bh(&dev->device_lock); - rets = -ENODEV; - DBG("failed to call heci_disconnect.\n"); - goto free; - } - } else { - DBG("add disconnect cb to control write list\n"); - list_add_tail(&priv_cb->cb_list, - &dev->ctrl_wr_list.heci_cb.cb_list); - } - spin_unlock_bh(&dev->device_lock); - - err = wait_event_timeout(dev->wait_recvd_msg, - (HECI_FILE_DISCONNECTED == file_ext->state), - timeout * HZ); - - spin_lock_bh(&dev->device_lock); - if (HECI_FILE_DISCONNECTED == file_ext->state) { - rets = 0; - DBG("successfully disconnected from fw client.\n"); - } else { - rets = -ENODEV; - if (HECI_FILE_DISCONNECTED != file_ext->state) - DBG("wrong status client disconnect.\n"); - - if (err) - DBG("wait failed disconnect err=%08x\n", err); - - DBG("failed to disconnect from fw client.\n"); - } - - heci_flush_list(&dev->ctrl_rd_list, file_ext); - heci_flush_list(&dev->ctrl_wr_list, file_ext); - spin_unlock_bh(&dev->device_lock); -free: - heci_free_cb_private(priv_cb); - return rets; -} - -/** - * heci_remove_client_from_file_list - - * remove file private data from device file list - * - * @dev: Device object for our driver - * @host_client_id: host client id to be removed - */ -void heci_remove_client_from_file_list(struct iamt_heci_device *dev, - __u8 host_client_id) -{ - struct heci_file_private *file_pos = NULL; - struct heci_file_private *file_next = NULL; - list_for_each_entry_safe(file_pos, file_next, &dev->file_list, link) { - if (host_client_id == file_pos->host_client_id) { - DBG("remove host client = %d, ME client = %d\n", - file_pos->host_client_id, - file_pos->me_client_id); - list_del_init(&file_pos->link); - break; - } - } -} diff --git a/drivers/staging/heci/heci_interface.c b/drivers/staging/heci/heci_interface.c deleted file mode 100644 index 03e1df1a88a0..000000000000 --- a/drivers/staging/heci/heci_interface.c +++ /dev/null @@ -1,498 +0,0 @@ -/* - * Part of Intel(R) Manageability Engine Interface Linux driver - * - * Copyright (c) 2003 - 2008 Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - * - */ - - -#include "heci.h" -#include "heci_interface.h" - - -/** - * heci_set_csr_register - write H_CSR register to the heci device, - * and ignore the H_IS bit for it is write-one-to-zero. - * - * @dev: device object for our driver - */ -void heci_set_csr_register(struct iamt_heci_device *dev) -{ - if ((dev->host_hw_state & H_IS) == H_IS) - dev->host_hw_state &= ~H_IS; - write_heci_register(dev, H_CSR, dev->host_hw_state); - dev->host_hw_state = read_heci_register(dev, H_CSR); -} - -/** - * heci_csr_enable_interrupts - enable heci device interrupts - * - * @dev: device object for our driver - */ -void heci_csr_enable_interrupts(struct iamt_heci_device *dev) -{ - dev->host_hw_state |= H_IE; - heci_set_csr_register(dev); -} - -/** - * heci_csr_disable_interrupts - disable heci device interrupts - * - * @dev: device object for our driver - */ -void heci_csr_disable_interrupts(struct iamt_heci_device *dev) -{ - dev->host_hw_state &= ~H_IE; - heci_set_csr_register(dev); -} - -/** - * heci_csr_clear_his - clear H_IS bit in H_CSR - * - * @dev: device object for our driver - */ -void heci_csr_clear_his(struct iamt_heci_device *dev) -{ - write_heci_register(dev, H_CSR, dev->host_hw_state); - dev->host_hw_state = read_heci_register(dev, H_CSR); -} - -/** - * _host_get_filled_slots - get number of device filled buffer slots - * - * @device: the device structure - * - * returns numer of filled slots - */ -static unsigned char _host_get_filled_slots(const struct iamt_heci_device *dev) -{ - char read_ptr, write_ptr; - - read_ptr = (char) ((dev->host_hw_state & H_CBRP) >> 8); - write_ptr = (char) ((dev->host_hw_state & H_CBWP) >> 16); - - return (unsigned char) (write_ptr - read_ptr); -} - -/** - * host_buffer_is_empty - check if host buffer is empty. - * - * @dev: device object for our driver - * - * returns 1 if empty, 0 - otherwise. - */ -int host_buffer_is_empty(struct iamt_heci_device *dev) -{ - unsigned char filled_slots; - - dev->host_hw_state = read_heci_register(dev, H_CSR); - filled_slots = _host_get_filled_slots(dev); - - if (filled_slots > 0) - return 0; - - return 1; -} - -/** - * count_empty_write_slots - count write empty slots. - * - * @dev: device object for our driver - * - * returns -1(ESLOTS_OVERFLOW) if overflow, otherwise empty slots count - */ -__s32 count_empty_write_slots(const struct iamt_heci_device *dev) -{ - unsigned char buffer_depth, filled_slots, empty_slots; - - buffer_depth = (unsigned char) ((dev->host_hw_state & H_CBD) >> 24); - filled_slots = _host_get_filled_slots(dev); - empty_slots = buffer_depth - filled_slots; - - if (filled_slots > buffer_depth) { - /* overflow */ - return -ESLOTS_OVERFLOW; - } - - return (__s32) empty_slots; -} - -/** - * heci_write_message - write a message to heci device. - * - * @dev: device object for our driver - * @heci_hdr: header of message - * @write_buffer: message buffer will be write - * @write_length: message size will be write - * - * returns 1 if success, 0 - otherwise. - */ -int heci_write_message(struct iamt_heci_device *dev, - struct heci_msg_hdr *header, - unsigned char *write_buffer, - unsigned long write_length) -{ - __u32 temp_msg = 0; - unsigned long bytes_written = 0; - unsigned char buffer_depth, filled_slots, empty_slots; - unsigned long dw_to_write; - - dev->host_hw_state = read_heci_register(dev, H_CSR); - DBG("host_hw_state = 0x%08x.\n", dev->host_hw_state); - DBG("heci_write_message header=%08x.\n", *((__u32 *) header)); - buffer_depth = (unsigned char) ((dev->host_hw_state & H_CBD) >> 24); - filled_slots = _host_get_filled_slots(dev); - empty_slots = buffer_depth - filled_slots; - DBG("filled = %hu, empty = %hu.\n", filled_slots, empty_slots); - - dw_to_write = ((write_length + 3) / 4); - - if (dw_to_write > empty_slots) - return 0; - - write_heci_register(dev, H_CB_WW, *((__u32 *) header)); - - while (write_length >= 4) { - write_heci_register(dev, H_CB_WW, - *(__u32 *) (write_buffer + bytes_written)); - bytes_written += 4; - write_length -= 4; - } - - if (write_length > 0) { - memcpy(&temp_msg, &write_buffer[bytes_written], write_length); - write_heci_register(dev, H_CB_WW, temp_msg); - } - - dev->host_hw_state |= H_IG; - heci_set_csr_register(dev); - dev->me_hw_state = read_heci_register(dev, ME_CSR_HA); - if ((dev->me_hw_state & ME_RDY_HRA) != ME_RDY_HRA) - return 0; - - dev->write_hang = 0; - return 1; -} - -/** - * count_full_read_slots - count read full slots. - * - * @dev: device object for our driver - * - * returns -1(ESLOTS_OVERFLOW) if overflow, otherwise filled slots count - */ -__s32 count_full_read_slots(struct iamt_heci_device *dev) -{ - char read_ptr, write_ptr; - unsigned char buffer_depth, filled_slots; - - dev->me_hw_state = read_heci_register(dev, ME_CSR_HA); - buffer_depth = (unsigned char)((dev->me_hw_state & ME_CBD_HRA) >> 24); - read_ptr = (char) ((dev->me_hw_state & ME_CBRP_HRA) >> 8); - write_ptr = (char) ((dev->me_hw_state & ME_CBWP_HRA) >> 16); - filled_slots = (unsigned char) (write_ptr - read_ptr); - - if (filled_slots > buffer_depth) { - /* overflow */ - return -ESLOTS_OVERFLOW; - } - - DBG("filled_slots =%08x \n", filled_slots); - return (__s32) filled_slots; -} - -/** - * heci_read_slots - read a message from heci device. - * - * @dev: device object for our driver - * @buffer: message buffer will be write - * @buffer_length: message size will be read - */ -void heci_read_slots(struct iamt_heci_device *dev, - unsigned char *buffer, unsigned long buffer_length) -{ - __u32 i = 0; - unsigned char temp_buf[sizeof(__u32)]; - - while (buffer_length >= sizeof(__u32)) { - ((__u32 *) buffer)[i] = read_heci_register(dev, ME_CB_RW); - DBG("buffer[%d]= %d\n", i, ((__u32 *) buffer)[i]); - i++; - buffer_length -= sizeof(__u32); - } - - if (buffer_length > 0) { - *((__u32 *) &temp_buf) = read_heci_register(dev, ME_CB_RW); - memcpy(&buffer[i * 4], temp_buf, buffer_length); - } - - dev->host_hw_state |= H_IG; - heci_set_csr_register(dev); -} - -/** - * flow_ctrl_creds - check flow_control credentials. - * - * @dev: device object for our driver - * @file_ext: private data of the file object - * - * returns 1 if flow_ctrl_creds >0, 0 - otherwise. - */ -int flow_ctrl_creds(struct iamt_heci_device *dev, - struct heci_file_private *file_ext) -{ - __u8 i; - - if (!dev->num_heci_me_clients) - return 0; - - if (file_ext == NULL) - return 0; - - if (file_ext->flow_ctrl_creds > 0) - return 1; - - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (dev->me_clients[i].client_id == file_ext->me_client_id) { - if (dev->me_clients[i].flow_ctrl_creds > 0) { - BUG_ON(dev->me_clients[i].props.single_recv_buf - == 0); - return 1; - } - return 0; - } - } - BUG(); - return 0; -} - -/** - * flow_ctrl_reduce - reduce flow_control. - * - * @dev: device object for our driver - * @file_ext: private data of the file object - */ -void flow_ctrl_reduce(struct iamt_heci_device *dev, - struct heci_file_private *file_ext) -{ - __u8 i; - - if (!dev->num_heci_me_clients) - return; - - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (dev->me_clients[i].client_id == file_ext->me_client_id) { - if (dev->me_clients[i].props.single_recv_buf != 0) { - BUG_ON(dev->me_clients[i].flow_ctrl_creds <= 0); - dev->me_clients[i].flow_ctrl_creds--; - } else { - BUG_ON(file_ext->flow_ctrl_creds <= 0); - file_ext->flow_ctrl_creds--; - } - return; - } - } - BUG(); -} - -/** - * heci_send_flow_control - send flow control to fw. - * - * @dev: device object for our driver - * @file_ext: private data of the file object - * - * returns 1 if success, 0 - otherwise. - */ -int heci_send_flow_control(struct iamt_heci_device *dev, - struct heci_file_private *file_ext) -{ - struct heci_msg_hdr *heci_hdr; - struct hbm_flow_control *heci_flow_control; - - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - heci_hdr->host_addr = 0; - heci_hdr->me_addr = 0; - heci_hdr->length = sizeof(struct hbm_flow_control); - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - - heci_flow_control = (struct hbm_flow_control *) &dev->wr_msg_buf[1]; - memset(heci_flow_control, 0, sizeof(heci_flow_control)); - heci_flow_control->host_addr = file_ext->host_client_id; - heci_flow_control->me_addr = file_ext->me_client_id; - heci_flow_control->cmd.cmd = HECI_FLOW_CONTROL_CMD; - memset(heci_flow_control->reserved, 0, - sizeof(heci_flow_control->reserved)); - DBG("sending flow control host client = %d, me client = %d\n", - file_ext->host_client_id, file_ext->me_client_id); - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) heci_flow_control, - sizeof(struct hbm_flow_control))) - return 0; - - return 1; - -} - -/** - * other_client_is_connecting - check if other - * client with the same client id is connected. - * - * @dev: device object for our driver - * @file_ext: private data of the file object - * - * returns 1 if other client is connected, 0 - otherwise. - */ -int other_client_is_connecting(struct iamt_heci_device *dev, - struct heci_file_private *file_ext) -{ - struct heci_file_private *file_pos = NULL; - struct heci_file_private *file_next = NULL; - - list_for_each_entry_safe(file_pos, file_next, &dev->file_list, link) { - if ((file_pos->state == HECI_FILE_CONNECTING) - && (file_pos != file_ext) - && file_ext->me_client_id == file_pos->me_client_id) - return 1; - - } - return 0; -} - -/** - * heci_send_wd - send watch dog message to fw. - * - * @dev: device object for our driver - * - * returns 1 if success, 0 - otherwise. - */ -int heci_send_wd(struct iamt_heci_device *dev) -{ - struct heci_msg_hdr *heci_hdr; - - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - heci_hdr->host_addr = dev->wd_file_ext.host_client_id; - heci_hdr->me_addr = dev->wd_file_ext.me_client_id; - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - - if (!memcmp(dev->wd_data, heci_start_wd_params, - HECI_WD_PARAMS_SIZE)) { - heci_hdr->length = HECI_START_WD_DATA_SIZE; - } else { - BUG_ON(memcmp(dev->wd_data, heci_stop_wd_params, - HECI_WD_PARAMS_SIZE)); - heci_hdr->length = HECI_WD_PARAMS_SIZE; - } - - if (!heci_write_message(dev, heci_hdr, dev->wd_data, heci_hdr->length)) - return 0; - - return 1; -} - -/** - * heci_disconnect - send disconnect message to fw. - * - * @dev: device object for our driver - * @file_ext: private data of the file object - * - * returns 1 if success, 0 - otherwise. - */ -int heci_disconnect(struct iamt_heci_device *dev, - struct heci_file_private *file_ext) -{ - struct heci_msg_hdr *heci_hdr; - struct hbm_client_disconnect_request *heci_cli_disconnect; - - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - heci_hdr->host_addr = 0; - heci_hdr->me_addr = 0; - heci_hdr->length = sizeof(struct hbm_client_disconnect_request); - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - - heci_cli_disconnect = - (struct hbm_client_disconnect_request *) &dev->wr_msg_buf[1]; - memset(heci_cli_disconnect, 0, sizeof(heci_cli_disconnect)); - heci_cli_disconnect->host_addr = file_ext->host_client_id; - heci_cli_disconnect->me_addr = file_ext->me_client_id; - heci_cli_disconnect->cmd.cmd = CLIENT_DISCONNECT_REQ_CMD; - heci_cli_disconnect->reserved[0] = 0; - - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) heci_cli_disconnect, - sizeof(struct hbm_client_disconnect_request))) - return 0; - - return 1; -} - -/** - * heci_connect - send connect message to fw. - * - * @dev: device object for our driver - * @file_ext: private data of the file object - * - * returns 1 if success, 0 - otherwise. - */ -int heci_connect(struct iamt_heci_device *dev, - struct heci_file_private *file_ext) -{ - struct heci_msg_hdr *heci_hdr; - struct hbm_client_connect_request *heci_cli_connect; - - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - heci_hdr->host_addr = 0; - heci_hdr->me_addr = 0; - heci_hdr->length = sizeof(struct hbm_client_connect_request); - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - - heci_cli_connect = - (struct hbm_client_connect_request *) &dev->wr_msg_buf[1]; - heci_cli_connect->host_addr = file_ext->host_client_id; - heci_cli_connect->me_addr = file_ext->me_client_id; - heci_cli_connect->cmd.cmd = CLIENT_CONNECT_REQ_CMD; - heci_cli_connect->reserved = 0; - - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) heci_cli_connect, - sizeof(struct hbm_client_connect_request))) - return 0; - - return 1; -} diff --git a/drivers/staging/heci/heci_interface.h b/drivers/staging/heci/heci_interface.h deleted file mode 100644 index 34db7e52b8ef..000000000000 --- a/drivers/staging/heci/heci_interface.h +++ /dev/null @@ -1,170 +0,0 @@ -/* - * Part of Intel(R) Manageability Engine Interface Linux driver - * - * Copyright (c) 2003 - 2008 Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - * - */ - - -#ifndef _HECI_INTERFACE_H_ -#define _HECI_INTERFACE_H_ - -#include <linux/spinlock.h> -#include <linux/list.h> -#include <linux/pci.h> -#include <linux/timer.h> -#include <linux/interrupt.h> -#include <linux/workqueue.h> -#include <linux/module.h> -#include <linux/aio.h> -#include <linux/types.h> -#include "heci_data_structures.h" - - -#define HBM_MINOR_VERSION 0 -#define HBM_MAJOR_VERSION 1 -#define HBM_TIMEOUT 1 /* 1 second */ - - -#define HOST_START_REQ_CMD 0x01 -#define HOST_START_RES_CMD 0x81 - -#define HOST_STOP_REQ_CMD 0x02 -#define HOST_STOP_RES_CMD 0x82 - -#define ME_STOP_REQ_CMD 0x03 - -#define HOST_ENUM_REQ_CMD 0x04 -#define HOST_ENUM_RES_CMD 0x84 - -#define HOST_CLIENT_PROPERTEIS_REQ_CMD 0x05 -#define HOST_CLIENT_PROPERTEIS_RES_CMD 0x85 - -#define CLIENT_CONNECT_REQ_CMD 0x06 -#define CLIENT_CONNECT_RES_CMD 0x86 - -#define CLIENT_DISCONNECT_REQ_CMD 0x07 -#define CLIENT_DISCONNECT_RES_CMD 0x87 - -#define HECI_FLOW_CONTROL_CMD 0x08 - - -#define AMT_WD_VALUE 120 /* seconds */ - -#define HECI_WATCHDOG_DATA_SIZE 16 -#define HECI_START_WD_DATA_SIZE 20 -#define HECI_WD_PARAMS_SIZE 4 - -/* IOCTL commands */ -#define IOCTL_HECI_GET_VERSION \ - _IOWR('H' , 0x0, struct heci_message_data) -#define IOCTL_HECI_CONNECT_CLIENT \ - _IOWR('H' , 0x01, struct heci_message_data) -#define IOCTL_HECI_WD \ - _IOWR('H' , 0x02, struct heci_message_data) -#define IOCTL_HECI_BYPASS_WD \ - _IOWR('H' , 0x10, struct heci_message_data) - -enum heci_stop_reason_types{ - DRIVER_STOP_REQUEST = 0x00, - DEVICE_D1_ENTRY = 0x01, - DEVICE_D2_ENTRY = 0x02, - DEVICE_D3_ENTRY = 0x03, - SYSTEM_S1_ENTRY = 0x04, - SYSTEM_S2_ENTRY = 0x05, - SYSTEM_S3_ENTRY = 0x06, - SYSTEM_S4_ENTRY = 0x07, - SYSTEM_S5_ENTRY = 0x08 -}; - -enum me_stop_reason_types{ - FW_UPDATE = 0x00 -}; - -enum client_connect_status_types{ - CCS_SUCCESS = 0x00, - CCS_NOT_FOUND = 0x01, - CCS_ALREADY_STARTED = 0x02, - CCS_OUT_OF_RESOURCES = 0x03, - CCS_MESSAGE_SMALL = 0x04 -}; - -enum client_disconnect_status_types{ - CDS_SUCCESS = 0x00 -}; - - -/* - * heci interface function prototypes - */ -void heci_set_csr_register(struct iamt_heci_device *dev); -void heci_csr_enable_interrupts(struct iamt_heci_device *dev); -void heci_csr_disable_interrupts(struct iamt_heci_device *dev); -void heci_csr_clear_his(struct iamt_heci_device *dev); - -void heci_read_slots(struct iamt_heci_device *dev, - unsigned char *buffer, unsigned long buffer_length); - -int heci_write_message(struct iamt_heci_device *dev, - struct heci_msg_hdr *header, - unsigned char *write_buffer, - unsigned long write_length); - -int host_buffer_is_empty(struct iamt_heci_device *dev); - -__s32 count_full_read_slots(struct iamt_heci_device *dev); - -__s32 count_empty_write_slots(const struct iamt_heci_device *dev); - -int flow_ctrl_creds(struct iamt_heci_device *dev, - struct heci_file_private *file_ext); - -int heci_send_wd(struct iamt_heci_device *dev); - -void flow_ctrl_reduce(struct iamt_heci_device *dev, - struct heci_file_private *file_ext); - -int heci_send_flow_control(struct iamt_heci_device *dev, - struct heci_file_private *file_ext); - -int heci_disconnect(struct iamt_heci_device *dev, - struct heci_file_private *file_ext); -int other_client_is_connecting(struct iamt_heci_device *dev, - struct heci_file_private *file_ext); -int heci_connect(struct iamt_heci_device *dev, - struct heci_file_private *file_ext); - -#endif /* _HECI_INTERFACE_H_ */ diff --git a/drivers/staging/heci/heci_main.c b/drivers/staging/heci/heci_main.c deleted file mode 100644 index ddf48227e358..000000000000 --- a/drivers/staging/heci/heci_main.c +++ /dev/null @@ -1,1576 +0,0 @@ -/* - * Part of Intel(R) Manageability Engine Interface Linux driver - * - * Copyright (c) 2003 - 2008 Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - * - */ - - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/fs.h> -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/fcntl.h> -#include <linux/aio.h> -#include <linux/pci.h> -#include <linux/reboot.h> -#include <linux/poll.h> -#include <linux/init.h> -#include <linux/kdev_t.h> -#include <linux/ioctl.h> -#include <linux/cdev.h> -#include <linux/device.h> -#include <linux/unistd.h> -#include <linux/kthread.h> - -#include "heci.h" -#include "heci_interface.h" -#include "heci_version.h" - - -#define HECI_READ_TIMEOUT 45 - -#define HECI_DRIVER_NAME "heci" - -/* - * heci driver strings - */ -static char heci_driver_name[] = HECI_DRIVER_NAME; -static char heci_driver_string[] = "Intel(R) Management Engine Interface"; -static char heci_driver_version[] = HECI_DRIVER_VERSION; -static char heci_copyright[] = "Copyright (c) 2003 - 2008 Intel Corporation."; - - -#ifdef HECI_DEBUG -int heci_debug = 1; -#else -int heci_debug; -#endif -MODULE_PARM_DESC(heci_debug, "Debug enabled or not"); -module_param(heci_debug, int, 0644); - - -#define HECI_DEV_NAME "heci" - -/* heci char device for registration */ -static struct cdev heci_cdev; - -/* major number for device */ -static int heci_major; -/* The device pointer */ -static struct pci_dev *heci_device; - -static struct class *heci_class; - - -/* heci_pci_tbl - PCI Device ID Table */ -static struct pci_device_id heci_pci_tbl[] = { - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_82946GZ)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_82G35)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_82Q965)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_82G965)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_82GM965)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_82GME965)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9_82Q35)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9_82G33)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9_82Q33)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9_82X38)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9_3200)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9_6)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9_7)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9_8)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9_9)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9_10)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9M_1)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9M_2)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9M_3)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH9M_4)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH10_1)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH10_2)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH10_3)}, - {PCI_DEVICE(PCI_VENDOR_ID_INTEL, HECI_DEV_ID_ICH10_4)}, - /* required last entry */ - {0, } -}; - -MODULE_DEVICE_TABLE(pci, heci_pci_tbl); - -/* - * Local Function Prototypes - */ -static int __init heci_init_module(void); -static void __exit heci_exit_module(void); -static int __devinit heci_probe(struct pci_dev *pdev, - const struct pci_device_id *ent); -static void __devexit heci_remove(struct pci_dev *pdev); -static int heci_open(struct inode *inode, struct file *file); -static int heci_release(struct inode *inode, struct file *file); -static ssize_t heci_read(struct file *file, char __user *ubuf, - size_t length, loff_t *offset); -static int heci_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long data); -static ssize_t heci_write(struct file *file, const char __user *ubuf, - size_t length, loff_t *offset); -static unsigned int heci_poll(struct file *file, poll_table *wait); -static struct heci_cb_private *find_read_list_entry( - struct iamt_heci_device *dev, - struct heci_file_private *file_ext); -#ifdef CONFIG_PM -static int heci_suspend(struct pci_dev *pdev, pm_message_t state); -static int heci_resume(struct pci_dev *pdev); -static __u16 g_sus_wd_timeout; -#else -#define heci_suspend NULL -#define heci_resume NULL -#endif -/* - * PCI driver structure - */ -static struct pci_driver heci_driver = { - .name = heci_driver_name, - .id_table = heci_pci_tbl, - .probe = heci_probe, - .remove = __devexit_p(heci_remove), - .shutdown = __devexit_p(heci_remove), - .suspend = heci_suspend, - .resume = heci_resume -}; - -/* - * file operations structure will be use heci char device. - */ -static const struct file_operations heci_fops = { - .owner = THIS_MODULE, - .read = heci_read, - .ioctl = heci_ioctl, - .open = heci_open, - .release = heci_release, - .write = heci_write, - .poll = heci_poll, -}; - -/** - * heci_registration_cdev - set up the cdev structure for heci device. - * - * @dev: char device struct - * @hminor: minor number for registration char device - * @fops: file operations structure - * - * returns 0 on success, <0 on failure. - */ -static int heci_registration_cdev(struct cdev *dev, int hminor, - const struct file_operations *fops) -{ - int ret, devno = MKDEV(heci_major, hminor); - - cdev_init(dev, fops); - dev->owner = THIS_MODULE; - ret = cdev_add(dev, devno, 1); - /* Fail gracefully if need be */ - if (ret) { - printk(KERN_ERR "heci: Error %d registering heci device %d\n", - ret, hminor); - } - return ret; -} - -/* Display the version of heci driver. */ -static ssize_t version_show(struct class *dev, char *buf) -{ - return sprintf(buf, "%s %s.\n", - heci_driver_string, heci_driver_version); -} - -static CLASS_ATTR(version, S_IRUGO, version_show, NULL); - -/** - * heci_register_cdev - registers heci char device - * - * returns 0 on success, <0 on failure. - */ -static int heci_register_cdev(void) -{ - int ret; - dev_t dev; - - /* registration of char devices */ - ret = alloc_chrdev_region(&dev, HECI_MINORS_BASE, HECI_MINORS_COUNT, - HECI_DRIVER_NAME); - if (ret) { - printk(KERN_ERR "heci: Error allocating char device region.\n"); - return ret; - } - - heci_major = MAJOR(dev); - - ret = heci_registration_cdev(&heci_cdev, HECI_MINOR_NUMBER, - &heci_fops); - if (ret) - unregister_chrdev_region(MKDEV(heci_major, HECI_MINORS_BASE), - HECI_MINORS_COUNT); - - return ret; -} - -/** - * heci_unregister_cdev - unregisters heci char device - */ -static void heci_unregister_cdev(void) -{ - cdev_del(&heci_cdev); - unregister_chrdev_region(MKDEV(heci_major, HECI_MINORS_BASE), - HECI_MINORS_COUNT); -} - -#ifndef HECI_DEVICE_CREATE -#define HECI_DEVICE_CREATE device_create -#endif -/** - * heci_sysfs_device_create - adds device entry to sysfs - * - * returns 0 on success, <0 on failure. - */ -static int heci_sysfs_device_create(void) -{ - struct class *class; - void *tmphdev; - int err = 0; - - class = class_create(THIS_MODULE, HECI_DRIVER_NAME); - if (IS_ERR(class)) { - err = PTR_ERR(class); - printk(KERN_ERR "heci: Error creating heci class.\n"); - goto err_out; - } - - err = class_create_file(class, &class_attr_version); - if (err) { - class_destroy(class); - printk(KERN_ERR "heci: Error creating heci class file.\n"); - goto err_out; - } - - tmphdev = HECI_DEVICE_CREATE(class, NULL, heci_cdev.dev, NULL, - HECI_DEV_NAME); - if (IS_ERR(tmphdev)) { - err = PTR_ERR(tmphdev); - class_remove_file(class, &class_attr_version); - class_destroy(class); - goto err_out; - } - - heci_class = class; -err_out: - return err; -} - -/** - * heci_sysfs_device_remove - unregisters the device entry on sysfs - */ -static void heci_sysfs_device_remove(void) -{ - if ((heci_class == NULL) || (IS_ERR(heci_class))) - return; - - device_destroy(heci_class, heci_cdev.dev); - class_remove_file(heci_class, &class_attr_version); - class_destroy(heci_class); -} - -/** - * heci_init_module - Driver Registration Routine - * - * heci_init_module is the first routine called when the driver is - * loaded. All it does is register with the PCI subsystem. - * - * returns 0 on success, <0 on failure. - */ -static int __init heci_init_module(void) -{ - int ret = 0; - - printk(KERN_INFO "heci: %s - version %s\n", heci_driver_string, - heci_driver_version); - printk(KERN_INFO "heci: %s\n", heci_copyright); - - /* init pci module */ - ret = pci_register_driver(&heci_driver); - if (ret < 0) { - printk(KERN_ERR "heci: Error registering driver.\n"); - goto end; - } - - ret = heci_register_cdev(); - if (ret) - goto unregister_pci; - - ret = heci_sysfs_device_create(); - if (ret) - goto unregister_cdev; - - return ret; - -unregister_cdev: - heci_unregister_cdev(); -unregister_pci: - pci_unregister_driver(&heci_driver); -end: - return ret; -} - -module_init(heci_init_module); - - -/** - * heci_exit_module - Driver Exit Cleanup Routine - * - * heci_exit_module is called just before the driver is removed - * from memory. - */ -static void __exit heci_exit_module(void) -{ - pci_unregister_driver(&heci_driver); - heci_sysfs_device_remove(); - heci_unregister_cdev(); -} - -module_exit(heci_exit_module); - - -/** - * heci_probe - Device Initialization Routine - * - * @pdev: PCI device information struct - * @ent: entry in kcs_pci_tbl - * - * returns 0 on success, <0 on failure. - */ -static int __devinit heci_probe(struct pci_dev *pdev, - const struct pci_device_id *ent) -{ - struct iamt_heci_device *dev = NULL; - int i, err = 0; - - if (heci_device) { - err = -EEXIST; - goto end; - } - /* enable pci dev */ - err = pci_enable_device(pdev); - if (err) { - printk(KERN_ERR "heci: Failed to enable pci device.\n"); - goto end; - } - /* set PCI host mastering */ - pci_set_master(pdev); - /* pci request regions for heci driver */ - err = pci_request_regions(pdev, heci_driver_name); - if (err) { - printk(KERN_ERR "heci: Failed to get pci regions.\n"); - goto disable_device; - } - /* allocates and initializes the heci dev structure */ - dev = init_heci_device(pdev); - if (!dev) { - err = -ENOMEM; - goto release_regions; - } - /* mapping IO device memory */ - for (i = 0; i <= 5; i++) { - if (pci_resource_len(pdev, i) == 0) - continue; - if (pci_resource_flags(pdev, i) & IORESOURCE_IO) { - printk(KERN_ERR "heci: heci has IO ports.\n"); - goto free_device; - } else if (pci_resource_flags(pdev, i) & IORESOURCE_MEM) { - if (dev->mem_base) { - printk(KERN_ERR - "heci: Too many mem addresses.\n"); - goto free_device; - } - dev->mem_base = pci_resource_start(pdev, i); - dev->mem_length = pci_resource_len(pdev, i); - } - } - if (!dev->mem_base) { - printk(KERN_ERR "heci: No address to use.\n"); - err = -ENODEV; - goto free_device; - } - dev->mem_addr = ioremap_nocache(dev->mem_base, - dev->mem_length); - if (!dev->mem_addr) { - printk(KERN_ERR "heci: Remap IO device memory failure.\n"); - err = -ENOMEM; - goto free_device; - } - /* request and enable interrupt */ - err = request_irq(pdev->irq, heci_isr_interrupt, IRQF_SHARED, - heci_driver_name, dev); - if (err) { - printk(KERN_ERR "heci: Request_irq failure. irq = %d \n", - pdev->irq); - goto unmap_memory; - } - - if (heci_hw_init(dev)) { - printk(KERN_ERR "heci: Init hw failure.\n"); - err = -ENODEV; - goto release_irq; - } - init_timer(&dev->wd_timer); - - heci_initialize_clients(dev); - if (dev->heci_state != HECI_ENABLED) { - err = -ENODEV; - goto release_hw; - } - - spin_lock_bh(&dev->device_lock); - heci_device = pdev; - pci_set_drvdata(pdev, dev); - spin_unlock_bh(&dev->device_lock); - - if (dev->wd_timeout) - mod_timer(&dev->wd_timer, jiffies); - -#ifdef CONFIG_PM - g_sus_wd_timeout = 0; -#endif - printk(KERN_INFO "heci driver initialization successful.\n"); - return 0; - -release_hw: - /* disable interrupts */ - dev->host_hw_state = read_heci_register(dev, H_CSR); - heci_csr_disable_interrupts(dev); - - del_timer_sync(&dev->wd_timer); - - flush_scheduled_work(); - -release_irq: - free_irq(pdev->irq, dev); -unmap_memory: - if (dev->mem_addr) - iounmap(dev->mem_addr); -free_device: - kfree(dev); -release_regions: - pci_release_regions(pdev); -disable_device: - pci_disable_device(pdev); -end: - printk(KERN_ERR "heci driver initialization failed.\n"); - return err; -} - -/** - * heci_remove - Device Removal Routine - * - * @pdev: PCI device information struct - * - * heci_remove is called by the PCI subsystem to alert the driver - * that it should release a PCI device. - */ -static void __devexit heci_remove(struct pci_dev *pdev) -{ - struct iamt_heci_device *dev = pci_get_drvdata(pdev); - - if (heci_device != pdev) - return; - - if (dev == NULL) - return; - - spin_lock_bh(&dev->device_lock); - if (heci_device != pdev) { - spin_unlock_bh(&dev->device_lock); - return; - } - - if (dev->reinit_tsk != NULL) { - kthread_stop(dev->reinit_tsk); - dev->reinit_tsk = NULL; - } - - del_timer_sync(&dev->wd_timer); - if (dev->wd_file_ext.state == HECI_FILE_CONNECTED - && dev->wd_timeout) { - dev->wd_timeout = 0; - dev->wd_due_counter = 0; - memcpy(dev->wd_data, heci_stop_wd_params, HECI_WD_PARAMS_SIZE); - dev->stop = 1; - if (dev->host_buffer_is_empty && - flow_ctrl_creds(dev, &dev->wd_file_ext)) { - dev->host_buffer_is_empty = 0; - - if (!heci_send_wd(dev)) - DBG("send stop WD failed\n"); - else - flow_ctrl_reduce(dev, &dev->wd_file_ext); - - dev->wd_pending = 0; - } else { - dev->wd_pending = 1; - } - dev->wd_stoped = 0; - spin_unlock_bh(&dev->device_lock); - - wait_event_interruptible_timeout(dev->wait_stop_wd, - (dev->wd_stoped), 10 * HZ); - spin_lock_bh(&dev->device_lock); - if (!dev->wd_stoped) - DBG("stop wd failed to complete.\n"); - else - DBG("stop wd complete.\n"); - - } - - heci_device = NULL; - spin_unlock_bh(&dev->device_lock); - - if (dev->iamthif_file_ext.state == HECI_FILE_CONNECTED) { - dev->iamthif_file_ext.state = HECI_FILE_DISCONNECTING; - heci_disconnect_host_client(dev, - &dev->iamthif_file_ext); - } - if (dev->wd_file_ext.state == HECI_FILE_CONNECTED) { - dev->wd_file_ext.state = HECI_FILE_DISCONNECTING; - heci_disconnect_host_client(dev, - &dev->wd_file_ext); - } - - spin_lock_bh(&dev->device_lock); - - /* remove entry if already in list */ - DBG("list del iamthif and wd file list.\n"); - heci_remove_client_from_file_list(dev, dev->wd_file_ext. - host_client_id); - heci_remove_client_from_file_list(dev, - dev->iamthif_file_ext.host_client_id); - - dev->iamthif_current_cb = NULL; - dev->iamthif_file_ext.file = NULL; - dev->num_heci_me_clients = 0; - - spin_unlock_bh(&dev->device_lock); - - flush_scheduled_work(); - - /* disable interrupts */ - heci_csr_disable_interrupts(dev); - - free_irq(pdev->irq, dev); - pci_set_drvdata(pdev, NULL); - - if (dev->mem_addr) - iounmap(dev->mem_addr); - - kfree(dev); - - pci_release_regions(pdev); - pci_disable_device(pdev); -} - -/** - * heci_clear_list - remove all callbacks associated with file - * from heci_cb_list - * - * @file: file information struct - * @heci_cb_list: callbacks list - * - * heci_clear_list is called to clear resources associated with file - * when application calls close function or Ctrl-C was pressed - * - * returns 1 if callback removed from the list, 0 otherwise - */ -static int heci_clear_list(struct iamt_heci_device *dev, - struct file *file, struct list_head *heci_cb_list) -{ - struct heci_cb_private *priv_cb_pos = NULL; - struct heci_cb_private *priv_cb_next = NULL; - struct file *file_temp; - int rets = 0; - - /* list all list member */ - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - heci_cb_list, cb_list) { - file_temp = (struct file *)priv_cb_pos->file_object; - /* check if list member associated with a file */ - if (file_temp == file) { - /* remove member from the list */ - list_del(&priv_cb_pos->cb_list); - /* check if cb equal to current iamthif cb */ - if (dev->iamthif_current_cb == priv_cb_pos) { - dev->iamthif_current_cb = NULL; - /* send flow control to iamthif client */ - heci_send_flow_control(dev, - &dev->iamthif_file_ext); - } - /* free all allocated buffers */ - heci_free_cb_private(priv_cb_pos); - rets = 1; - } - } - return rets; -} - -/** - * heci_clear_lists - remove all callbacks associated with file - * - * @dev: device information struct - * @file: file information struct - * - * heci_clear_lists is called to clear resources associated with file - * when application calls close function or Ctrl-C was pressed - * - * returns 1 if callback removed from the list, 0 otherwise - */ -static int heci_clear_lists(struct iamt_heci_device *dev, struct file *file) -{ - int rets = 0; - - /* remove callbacks associated with a file */ - heci_clear_list(dev, file, &dev->pthi_cmd_list.heci_cb.cb_list); - if (heci_clear_list(dev, file, - &dev->pthi_read_complete_list.heci_cb.cb_list)) - rets = 1; - - heci_clear_list(dev, file, &dev->ctrl_rd_list.heci_cb.cb_list); - - if (heci_clear_list(dev, file, &dev->ctrl_wr_list.heci_cb.cb_list)) - rets = 1; - - if (heci_clear_list(dev, file, - &dev->write_waiting_list.heci_cb.cb_list)) - rets = 1; - - if (heci_clear_list(dev, file, &dev->write_list.heci_cb.cb_list)) - rets = 1; - - /* check if iamthif_current_cb not NULL */ - if (dev->iamthif_current_cb && (!rets)) { - /* check file and iamthif current cb association */ - if (dev->iamthif_current_cb->file_object == file) { - /* remove cb */ - heci_free_cb_private(dev->iamthif_current_cb); - dev->iamthif_current_cb = NULL; - rets = 1; - } - } - return rets; -} - -/** - * heci_open - the open function - * - * @inode: pointer to inode structure - * @file: pointer to file structure - * - * returns 0 on success, <0 on error - */ -static int heci_open(struct inode *inode, struct file *file) -{ - struct heci_file_private *file_ext; - int if_num = iminor(inode); - struct iamt_heci_device *dev; - - if (!heci_device) - return -ENODEV; - - dev = pci_get_drvdata(heci_device); - if ((if_num != HECI_MINOR_NUMBER) || (!dev)) - return -ENODEV; - - file_ext = heci_alloc_file_private(file); - if (file_ext == NULL) - return -ENOMEM; - - spin_lock_bh(&dev->device_lock); - if (dev->heci_state != HECI_ENABLED) { - spin_unlock_bh(&dev->device_lock); - kfree(file_ext); - return -ENODEV; - } - if (dev->open_handle_count >= HECI_MAX_OPEN_HANDLE_COUNT) { - spin_unlock_bh(&dev->device_lock); - kfree(file_ext); - return -ENFILE; - }; - dev->open_handle_count++; - list_add_tail(&file_ext->link, &dev->file_list); - while ((dev->heci_host_clients[dev->current_host_client_id / 8] - & (1 << (dev->current_host_client_id % 8))) != 0) { - - dev->current_host_client_id++; /* allow overflow */ - DBG("current_host_client_id = %d\n", - dev->current_host_client_id); - DBG("dev->open_handle_count = %lu\n", - dev->open_handle_count); - } - DBG("current_host_client_id = %d\n", dev->current_host_client_id); - file_ext->host_client_id = dev->current_host_client_id; - dev->heci_host_clients[file_ext->host_client_id / 8] |= - (1 << (file_ext->host_client_id % 8)); - spin_unlock_bh(&dev->device_lock); - spin_lock(&file_ext->file_lock); - spin_lock_bh(&dev->device_lock); - file_ext->state = HECI_FILE_INITIALIZING; - spin_unlock_bh(&dev->device_lock); - file_ext->sm_state = 0; - - file->private_data = file_ext; - spin_unlock(&file_ext->file_lock); - - return 0; -} - -/** - * heci_release - the release function - * - * @inode: pointer to inode structure - * @file: pointer to file structure - * - * returns 0 on success, <0 on error - */ -static int heci_release(struct inode *inode, struct file *file) -{ - int rets = 0; - int if_num = iminor(inode); - struct heci_file_private *file_ext = file->private_data; - struct heci_cb_private *priv_cb = NULL; - struct iamt_heci_device *dev; - - if (!heci_device) - return -ENODEV; - - dev = pci_get_drvdata(heci_device); - if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) - return -ENODEV; - - if (file_ext != &dev->iamthif_file_ext) { - spin_lock(&file_ext->file_lock); - spin_lock_bh(&dev->device_lock); - if (file_ext->state == HECI_FILE_CONNECTED) { - file_ext->state = HECI_FILE_DISCONNECTING; - spin_unlock_bh(&dev->device_lock); - spin_unlock(&file_ext->file_lock); - DBG("disconnecting client host client = %d, " - "ME client = %d\n", - file_ext->host_client_id, - file_ext->me_client_id); - rets = heci_disconnect_host_client(dev, file_ext); - spin_lock(&file_ext->file_lock); - spin_lock_bh(&dev->device_lock); - } - heci_flush_queues(dev, file_ext); - DBG("remove client host client = %d, ME client = %d\n", - file_ext->host_client_id, - file_ext->me_client_id); - - if (dev->open_handle_count > 0) { - dev->heci_host_clients[file_ext->host_client_id / 8] &= - ~(1 << (file_ext->host_client_id % 8)); - dev->open_handle_count--; - } - heci_remove_client_from_file_list(dev, - file_ext->host_client_id); - - /* free read cb */ - if (file_ext->read_cb != NULL) { - priv_cb = find_read_list_entry(dev, file_ext); - /* Remove entry from read list */ - if (priv_cb != NULL) - list_del(&priv_cb->cb_list); - - priv_cb = file_ext->read_cb; - file_ext->read_cb = NULL; - } - - spin_unlock_bh(&dev->device_lock); - file->private_data = NULL; - spin_unlock(&file_ext->file_lock); - - if (priv_cb != NULL) - heci_free_cb_private(priv_cb); - - kfree(file_ext); - } else { - spin_lock_bh(&dev->device_lock); - - if (dev->open_handle_count > 0) - dev->open_handle_count--; - - if (dev->iamthif_file_object == file - && dev->iamthif_state != HECI_IAMTHIF_IDLE) { - DBG("pthi canceled iamthif state %d\n", - dev->iamthif_state); - dev->iamthif_canceled = 1; - if (dev->iamthif_state == HECI_IAMTHIF_READ_COMPLETE) { - DBG("run next pthi iamthif cb\n"); - run_next_iamthif_cmd(dev); - } - } - - if (heci_clear_lists(dev, file)) - dev->iamthif_state = HECI_IAMTHIF_IDLE; - - spin_unlock_bh(&dev->device_lock); - } - return rets; -} - -static struct heci_cb_private *find_read_list_entry( - struct iamt_heci_device *dev, - struct heci_file_private *file_ext) -{ - struct heci_cb_private *priv_cb_pos = NULL; - struct heci_cb_private *priv_cb_next = NULL; - struct heci_file_private *file_ext_list_temp; - - if (dev->read_list.status == 0 - && !list_empty(&dev->read_list.heci_cb.cb_list)) { - DBG("remove read_list CB \n"); - list_for_each_entry_safe(priv_cb_pos, - priv_cb_next, - &dev->read_list.heci_cb.cb_list, cb_list) { - - file_ext_list_temp = (struct heci_file_private *) - priv_cb_pos->file_private; - - if ((file_ext_list_temp != NULL) && - heci_fe_same_id(file_ext, file_ext_list_temp)) - return priv_cb_pos; - - } - } - return NULL; -} - -/** - * heci_read - the read client message function. - * - * @file: pointer to file structure - * @ubuf: pointer to user buffer - * @length: buffer length - * @offset: data offset in buffer - * - * returns >=0 data length on success , <0 on error - */ -static ssize_t heci_read(struct file *file, char __user *ubuf, - size_t length, loff_t *offset) -{ - int i; - int rets = 0, err = 0; - int if_num = iminor(file->f_dentry->d_inode); - struct heci_file_private *file_ext = file->private_data; - struct heci_cb_private *priv_cb_pos = NULL; - struct heci_cb_private *priv_cb = NULL; - struct iamt_heci_device *dev; - - if (!heci_device) - return -ENODEV; - - dev = pci_get_drvdata(heci_device); - if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) - return -ENODEV; - - spin_lock_bh(&dev->device_lock); - if (dev->heci_state != HECI_ENABLED) { - spin_unlock_bh(&dev->device_lock); - return -ENODEV; - } - spin_unlock_bh(&dev->device_lock); - - spin_lock(&file_ext->file_lock); - if ((file_ext->sm_state & HECI_WD_STATE_INDEPENDENCE_MSG_SENT) == 0) { - spin_unlock(&file_ext->file_lock); - /* Do not allow to read watchdog client */ - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (memcmp(&heci_wd_guid, - &dev->me_clients[i].props.protocol_name, - sizeof(struct guid)) == 0) { - if (file_ext->me_client_id == - dev->me_clients[i].client_id) - return -EBADF; - } - } - } else { - file_ext->sm_state &= ~HECI_WD_STATE_INDEPENDENCE_MSG_SENT; - spin_unlock(&file_ext->file_lock); - } - - if (file_ext == &dev->iamthif_file_ext) { - rets = pthi_read(dev, if_num, file, ubuf, length, offset); - goto out; - } - - if (file_ext->read_cb && file_ext->read_cb->information > *offset) { - priv_cb = file_ext->read_cb; - goto copy_buffer; - } else if (file_ext->read_cb && file_ext->read_cb->information > 0 && - file_ext->read_cb->information <= *offset) { - priv_cb = file_ext->read_cb; - rets = 0; - goto free; - } else if ((!file_ext->read_cb || file_ext->read_cb->information == 0) - && *offset > 0) { - /*Offset needs to be cleaned for contingous reads*/ - *offset = 0; - rets = 0; - goto out; - } - - err = heci_start_read(dev, if_num, file_ext); - spin_lock_bh(&file_ext->read_io_lock); - if (err != 0 && err != -EBUSY) { - DBG("heci start read failure with status = %d\n", err); - spin_unlock_bh(&file_ext->read_io_lock); - rets = err; - goto out; - } - if (HECI_READ_COMPLETE != file_ext->reading_state - && !waitqueue_active(&file_ext->rx_wait)) { - if (file->f_flags & O_NONBLOCK) { - rets = -EAGAIN; - spin_unlock_bh(&file_ext->read_io_lock); - goto out; - } - spin_unlock_bh(&file_ext->read_io_lock); - - if (wait_event_interruptible(file_ext->rx_wait, - (HECI_READ_COMPLETE == file_ext->reading_state - || HECI_FILE_INITIALIZING == file_ext->state - || HECI_FILE_DISCONNECTED == file_ext->state - || HECI_FILE_DISCONNECTING == file_ext->state))) { - if (signal_pending(current)) { - rets = -EINTR; - goto out; - } - return -ERESTARTSYS; - } - - spin_lock_bh(&dev->device_lock); - if (HECI_FILE_INITIALIZING == file_ext->state || - HECI_FILE_DISCONNECTED == file_ext->state || - HECI_FILE_DISCONNECTING == file_ext->state) { - spin_unlock_bh(&dev->device_lock); - rets = -EBUSY; - goto out; - } - spin_unlock_bh(&dev->device_lock); - spin_lock_bh(&file_ext->read_io_lock); - } - - priv_cb = file_ext->read_cb; - - if (!priv_cb) { - spin_unlock_bh(&file_ext->read_io_lock); - return -ENODEV; - } - if (file_ext->reading_state != HECI_READ_COMPLETE) { - spin_unlock_bh(&file_ext->read_io_lock); - return 0; - } - spin_unlock_bh(&file_ext->read_io_lock); - /* now copy the data to user space */ -copy_buffer: - DBG("priv_cb->response_buffer size - %d\n", - priv_cb->response_buffer.size); - DBG("priv_cb->information - %lu\n", - priv_cb->information); - if (length == 0 || ubuf == NULL || - *offset > priv_cb->information) { - rets = -EMSGSIZE; - goto free; - } - - /* length is being turncated to PAGE_SIZE, however, */ - /* information size may be longer */ - length = (length < (priv_cb->information - *offset) ? - length : (priv_cb->information - *offset)); - - if (copy_to_user(ubuf, - priv_cb->response_buffer.data + *offset, - length)) { - rets = -EFAULT; - goto free; - } - - rets = length; - *offset += length; - if ((unsigned long)*offset < priv_cb->information) - goto out; - -free: - spin_lock_bh(&dev->device_lock); - priv_cb_pos = find_read_list_entry(dev, file_ext); - /* Remove entry from read list */ - if (priv_cb_pos != NULL) - list_del(&priv_cb_pos->cb_list); - spin_unlock_bh(&dev->device_lock); - heci_free_cb_private(priv_cb); - spin_lock_bh(&file_ext->read_io_lock); - file_ext->reading_state = HECI_IDLE; - file_ext->read_cb = NULL; - file_ext->read_pending = 0; - spin_unlock_bh(&file_ext->read_io_lock); -out: DBG("end heci read rets= %d\n", rets); - return rets; -} - -/** - * heci_write - the write function. - * - * @file: pointer to file structure - * @ubuf: pointer to user buffer - * @length: buffer length - * @offset: data offset in buffer - * - * returns >=0 data length on success , <0 on error - */ -static ssize_t heci_write(struct file *file, const char __user *ubuf, - size_t length, loff_t *offset) -{ - int rets = 0; - __u8 i; - int if_num = iminor(file->f_dentry->d_inode); - struct heci_file_private *file_ext = file->private_data; - struct heci_cb_private *priv_write_cb = NULL; - struct heci_msg_hdr heci_hdr; - struct iamt_heci_device *dev; - unsigned long currtime = get_seconds(); - - if (!heci_device) - return -ENODEV; - - dev = pci_get_drvdata(heci_device); - - if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) - return -ENODEV; - - spin_lock_bh(&dev->device_lock); - - if (dev->heci_state != HECI_ENABLED) { - spin_unlock_bh(&dev->device_lock); - return -ENODEV; - } - if (file_ext == &dev->iamthif_file_ext) { - priv_write_cb = find_pthi_read_list_entry(dev, file); - if ((priv_write_cb != NULL) && - (((currtime - priv_write_cb->read_time) >= - IAMTHIF_READ_TIMER) || - (file_ext->reading_state == HECI_READ_COMPLETE))) { - (*offset) = 0; - list_del(&priv_write_cb->cb_list); - heci_free_cb_private(priv_write_cb); - priv_write_cb = NULL; - } - } - - /* free entry used in read */ - if (file_ext->reading_state == HECI_READ_COMPLETE) { - *offset = 0; - priv_write_cb = find_read_list_entry(dev, file_ext); - if (priv_write_cb != NULL) { - list_del(&priv_write_cb->cb_list); - heci_free_cb_private(priv_write_cb); - priv_write_cb = NULL; - spin_lock_bh(&file_ext->read_io_lock); - file_ext->reading_state = HECI_IDLE; - file_ext->read_cb = NULL; - file_ext->read_pending = 0; - spin_unlock_bh(&file_ext->read_io_lock); - } - } else if (file_ext->reading_state == HECI_IDLE && - file_ext->read_pending == 0) - (*offset) = 0; - - spin_unlock_bh(&dev->device_lock); - - priv_write_cb = kzalloc(sizeof(struct heci_cb_private), GFP_KERNEL); - if (!priv_write_cb) - return -ENOMEM; - - priv_write_cb->file_object = file; - priv_write_cb->file_private = file_ext; - priv_write_cb->request_buffer.data = kmalloc(length, GFP_KERNEL); - if (!priv_write_cb->request_buffer.data) { - kfree(priv_write_cb); - return -ENOMEM; - } - DBG("length =%d\n", (int) length); - - if (copy_from_user(priv_write_cb->request_buffer.data, - ubuf, length)) { - rets = -EFAULT; - goto fail; - } - - spin_lock(&file_ext->file_lock); - file_ext->sm_state = 0; - if ((length == 4) && - ((memcmp(heci_wd_state_independence_msg[0], - priv_write_cb->request_buffer.data, 4) == 0) || - (memcmp(heci_wd_state_independence_msg[1], - priv_write_cb->request_buffer.data, 4) == 0) || - (memcmp(heci_wd_state_independence_msg[2], - priv_write_cb->request_buffer.data, 4) == 0))) - file_ext->sm_state |= HECI_WD_STATE_INDEPENDENCE_MSG_SENT; - spin_unlock(&file_ext->file_lock); - - INIT_LIST_HEAD(&priv_write_cb->cb_list); - if (file_ext == &dev->iamthif_file_ext) { - priv_write_cb->response_buffer.data = - kmalloc(IAMTHIF_MTU, GFP_KERNEL); - if (!priv_write_cb->response_buffer.data) { - rets = -ENOMEM; - goto fail; - } - spin_lock_bh(&dev->device_lock); - if (dev->heci_state != HECI_ENABLED) { - spin_unlock_bh(&dev->device_lock); - rets = -ENODEV; - goto fail; - } - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (dev->me_clients[i].client_id == - dev->iamthif_file_ext.me_client_id) - break; - } - - BUG_ON(dev->me_clients[i].client_id != file_ext->me_client_id); - if ((i == dev->num_heci_me_clients) || - (dev->me_clients[i].client_id != - dev->iamthif_file_ext.me_client_id)) { - - spin_unlock_bh(&dev->device_lock); - rets = -ENODEV; - goto fail; - } else if ((length > dev->me_clients[i].props.max_msg_length) - || (length <= 0)) { - spin_unlock_bh(&dev->device_lock); - rets = -EMSGSIZE; - goto fail; - } - - - priv_write_cb->response_buffer.size = IAMTHIF_MTU; - priv_write_cb->major_file_operations = HECI_IOCTL; - priv_write_cb->information = 0; - priv_write_cb->request_buffer.size = length; - if (dev->iamthif_file_ext.state != HECI_FILE_CONNECTED) { - spin_unlock_bh(&dev->device_lock); - rets = -ENODEV; - goto fail; - } - - if (!list_empty(&dev->pthi_cmd_list.heci_cb.cb_list) - || dev->iamthif_state != HECI_IAMTHIF_IDLE) { - DBG("pthi_state = %d\n", (int) dev->iamthif_state); - DBG("add PTHI cb to pthi cmd waiting list\n"); - list_add_tail(&priv_write_cb->cb_list, - &dev->pthi_cmd_list.heci_cb.cb_list); - rets = length; - } else { - DBG("call pthi write\n"); - rets = pthi_write(dev, priv_write_cb); - - if (rets != 0) { - DBG("pthi write failed with status = %d\n", - rets); - spin_unlock_bh(&dev->device_lock); - goto fail; - } - rets = length; - } - spin_unlock_bh(&dev->device_lock); - return rets; - } - - priv_write_cb->major_file_operations = HECI_WRITE; - /* make sure information is zero before we start */ - - priv_write_cb->information = 0; - priv_write_cb->request_buffer.size = length; - - spin_lock(&file_ext->write_io_lock); - spin_lock_bh(&dev->device_lock); - DBG("host client = %d, ME client = %d\n", - file_ext->host_client_id, file_ext->me_client_id); - if (file_ext->state != HECI_FILE_CONNECTED) { - rets = -ENODEV; - DBG("host client = %d, is not connected to ME client = %d", - file_ext->host_client_id, - file_ext->me_client_id); - spin_unlock_bh(&dev->device_lock); - goto unlock; - } - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (dev->me_clients[i].client_id == - file_ext->me_client_id) - break; - } - BUG_ON(dev->me_clients[i].client_id != file_ext->me_client_id); - if (i == dev->num_heci_me_clients) { - rets = -ENODEV; - spin_unlock_bh(&dev->device_lock); - goto unlock; - } - if (length > dev->me_clients[i].props.max_msg_length || length <= 0) { - rets = -EINVAL; - spin_unlock_bh(&dev->device_lock); - goto unlock; - } - priv_write_cb->file_private = file_ext; - - if (flow_ctrl_creds(dev, file_ext) && - dev->host_buffer_is_empty) { - spin_unlock_bh(&dev->device_lock); - dev->host_buffer_is_empty = 0; - if (length > ((((dev->host_hw_state & H_CBD) >> 24) * - sizeof(__u32)) - sizeof(struct heci_msg_hdr))) { - - heci_hdr.length = - (((dev->host_hw_state & H_CBD) >> 24) * - sizeof(__u32)) - - sizeof(struct heci_msg_hdr); - heci_hdr.msg_complete = 0; - } else { - heci_hdr.length = length; - heci_hdr.msg_complete = 1; - } - heci_hdr.host_addr = file_ext->host_client_id; - heci_hdr.me_addr = file_ext->me_client_id; - heci_hdr.reserved = 0; - DBG("call heci_write_message header=%08x.\n", - *((__u32 *) &heci_hdr)); - spin_unlock(&file_ext->write_io_lock); - /* protect heci low level write */ - spin_lock_bh(&dev->device_lock); - if (!heci_write_message(dev, &heci_hdr, - (unsigned char *) (priv_write_cb->request_buffer.data), - heci_hdr.length)) { - - spin_unlock_bh(&dev->device_lock); - heci_free_cb_private(priv_write_cb); - rets = -ENODEV; - priv_write_cb->information = 0; - return rets; - } - file_ext->writing_state = HECI_WRITING; - priv_write_cb->information = heci_hdr.length; - if (heci_hdr.msg_complete) { - flow_ctrl_reduce(dev, file_ext); - list_add_tail(&priv_write_cb->cb_list, - &dev->write_waiting_list.heci_cb.cb_list); - } else { - list_add_tail(&priv_write_cb->cb_list, - &dev->write_list.heci_cb.cb_list); - } - spin_unlock_bh(&dev->device_lock); - - } else { - - spin_unlock_bh(&dev->device_lock); - priv_write_cb->information = 0; - file_ext->writing_state = HECI_WRITING; - spin_unlock(&file_ext->write_io_lock); - list_add_tail(&priv_write_cb->cb_list, - &dev->write_list.heci_cb.cb_list); - } - return length; - -unlock: - spin_unlock(&file_ext->write_io_lock); -fail: - heci_free_cb_private(priv_write_cb); - return rets; - -} - -/** - * heci_ioctl - the IOCTL function - * - * @inode: pointer to inode structure - * @file: pointer to file structure - * @cmd: ioctl command - * @data: pointer to heci message structure - * - * returns 0 on success , <0 on error - */ -static int heci_ioctl(struct inode *inode, struct file *file, - unsigned int cmd, unsigned long data) -{ - int rets = 0; - int if_num = iminor(inode); - struct heci_file_private *file_ext = file->private_data; - /* in user space */ - struct heci_message_data __user *u_msg; - struct heci_message_data k_msg; /* all in kernel on the stack */ - struct iamt_heci_device *dev; - - if (!capable(CAP_SYS_ADMIN)) - return -EPERM; - - if (!heci_device) - return -ENODEV; - - dev = pci_get_drvdata(heci_device); - if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) - return -ENODEV; - - spin_lock_bh(&dev->device_lock); - if (dev->heci_state != HECI_ENABLED) { - spin_unlock_bh(&dev->device_lock); - return -ENODEV; - } - spin_unlock_bh(&dev->device_lock); - - /* first copy from user all data needed */ - u_msg = (struct heci_message_data __user *)data; - if (copy_from_user(&k_msg, u_msg, sizeof(k_msg))) { - DBG("first copy from user all data needed filled\n"); - return -EFAULT; - } - DBG("user message size is %d\n", k_msg.size); - - switch (cmd) { - case IOCTL_HECI_GET_VERSION: - DBG(": IOCTL_HECI_GET_VERSION\n"); - rets = heci_ioctl_get_version(dev, if_num, u_msg, k_msg, - file_ext); - break; - - case IOCTL_HECI_CONNECT_CLIENT: - DBG(": IOCTL_HECI_CONNECT_CLIENT.\n"); - rets = heci_ioctl_connect_client(dev, if_num, u_msg, k_msg, - file); - break; - - case IOCTL_HECI_WD: - DBG(": IOCTL_HECI_WD.\n"); - rets = heci_ioctl_wd(dev, if_num, k_msg, file_ext); - break; - - case IOCTL_HECI_BYPASS_WD: - DBG(": IOCTL_HECI_BYPASS_WD.\n"); - rets = heci_ioctl_bypass_wd(dev, if_num, k_msg, file_ext); - break; - - default: - rets = -EINVAL; - break; - } - return rets; -} - -/** - * heci_poll - the poll function - * - * @file: pointer to file structure - * @wait: pointer to poll_table structure - * - * returns poll mask - */ -static unsigned int heci_poll(struct file *file, poll_table *wait) -{ - int if_num = iminor(file->f_dentry->d_inode); - unsigned int mask = 0; - struct heci_file_private *file_ext = file->private_data; - struct iamt_heci_device *dev; - - if (!heci_device) - return mask; - - dev = pci_get_drvdata(heci_device); - - if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) - return mask; - - spin_lock_bh(&dev->device_lock); - if (dev->heci_state != HECI_ENABLED) { - spin_unlock_bh(&dev->device_lock); - return mask; - } - spin_unlock_bh(&dev->device_lock); - - if (file_ext == &dev->iamthif_file_ext) { - poll_wait(file, &dev->iamthif_file_ext.wait, wait); - spin_lock(&dev->iamthif_file_ext.file_lock); - if (dev->iamthif_state == HECI_IAMTHIF_READ_COMPLETE - && dev->iamthif_file_object == file) { - mask |= (POLLIN | POLLRDNORM); - spin_lock_bh(&dev->device_lock); - DBG("run next pthi cb\n"); - run_next_iamthif_cmd(dev); - spin_unlock_bh(&dev->device_lock); - } - spin_unlock(&dev->iamthif_file_ext.file_lock); - - } else{ - poll_wait(file, &file_ext->tx_wait, wait); - spin_lock(&file_ext->write_io_lock); - if (HECI_WRITE_COMPLETE == file_ext->writing_state) - mask |= (POLLIN | POLLRDNORM); - - spin_unlock(&file_ext->write_io_lock); - } - - return mask; -} - -#ifdef CONFIG_PM -static int heci_suspend(struct pci_dev *pdev, pm_message_t state) -{ - struct iamt_heci_device *dev = pci_get_drvdata(pdev); - int err = 0; - - spin_lock_bh(&dev->device_lock); - if (dev->reinit_tsk != NULL) { - kthread_stop(dev->reinit_tsk); - dev->reinit_tsk = NULL; - } - spin_unlock_bh(&dev->device_lock); - - /* Stop watchdog if exists */ - del_timer_sync(&dev->wd_timer); - if (dev->wd_file_ext.state == HECI_FILE_CONNECTED - && dev->wd_timeout) { - spin_lock_bh(&dev->device_lock); - g_sus_wd_timeout = dev->wd_timeout; - dev->wd_timeout = 0; - dev->wd_due_counter = 0; - memcpy(dev->wd_data, heci_stop_wd_params, - HECI_WD_PARAMS_SIZE); - dev->stop = 1; - if (dev->host_buffer_is_empty && - flow_ctrl_creds(dev, &dev->wd_file_ext)) { - dev->host_buffer_is_empty = 0; - if (!heci_send_wd(dev)) - DBG("send stop WD failed\n"); - else - flow_ctrl_reduce(dev, &dev->wd_file_ext); - - dev->wd_pending = 0; - } else { - dev->wd_pending = 1; - } - spin_unlock_bh(&dev->device_lock); - dev->wd_stoped = 0; - - err = wait_event_interruptible_timeout(dev->wait_stop_wd, - (dev->wd_stoped), - 10 * HZ); - if (!dev->wd_stoped) - DBG("stop wd failed to complete.\n"); - else { - DBG("stop wd complete %d.\n", err); - err = 0; - } - } - /* Set new heci state */ - spin_lock_bh(&dev->device_lock); - if (dev->heci_state == HECI_ENABLED || - dev->heci_state == HECI_RECOVERING_FROM_RESET) { - dev->heci_state = HECI_POWER_DOWN; - heci_reset(dev, 0); - } - spin_unlock_bh(&dev->device_lock); - - pci_save_state(pdev); - - pci_disable_device(pdev); - free_irq(pdev->irq, dev); - - pci_set_power_state(pdev, PCI_D3hot); - - return err; -} - -static int heci_resume(struct pci_dev *pdev) -{ - struct iamt_heci_device *dev; - int err = 0; - - pci_set_power_state(pdev, PCI_D0); - pci_restore_state(pdev); - - dev = pci_get_drvdata(pdev); - if (!dev) - return -ENODEV; - - /* request and enable interrupt */ - err = request_irq(pdev->irq, heci_isr_interrupt, IRQF_SHARED, - heci_driver_name, dev); - if (err) { - printk(KERN_ERR "heci: Request_irq failure. irq = %d \n", - pdev->irq); - return err; - } - - spin_lock_bh(&dev->device_lock); - dev->heci_state = HECI_POWER_UP; - heci_reset(dev, 1); - spin_unlock_bh(&dev->device_lock); - - /* Start watchdog if stopped in suspend */ - if (g_sus_wd_timeout != 0) { - dev->wd_timeout = g_sus_wd_timeout; - - memcpy(dev->wd_data, heci_start_wd_params, - HECI_WD_PARAMS_SIZE); - memcpy(dev->wd_data + HECI_WD_PARAMS_SIZE, - &dev->wd_timeout, sizeof(__u16)); - dev->wd_due_counter = 1; - - if (dev->wd_timeout) - mod_timer(&dev->wd_timer, jiffies); - - g_sus_wd_timeout = 0; - } - return err; -} -#endif - -MODULE_AUTHOR("Intel Corporation"); -MODULE_DESCRIPTION("Intel(R) Management Engine Interface"); -MODULE_LICENSE("Dual BSD/GPL"); -MODULE_VERSION(HECI_DRIVER_VERSION); diff --git a/drivers/staging/heci/heci_version.h b/drivers/staging/heci/heci_version.h deleted file mode 100644 index 3007aa6e17d4..000000000000 --- a/drivers/staging/heci/heci_version.h +++ /dev/null @@ -1,54 +0,0 @@ -/* - * Part of Intel(R) Manageability Engine Interface Linux driver - * - * Copyright (c) 2003 - 2008 Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - * - */ - -#ifndef HECI_VERSION_H -#define HECI_VERSION_H - -#define MAJOR_VERSION 5 -#define MINOR_VERSION 0 -#define QUICK_FIX_NUMBER 0 -#define VER_BUILD 31 - -#define HECI_DRV_VER1 __stringify(MAJOR_VERSION) "." __stringify(MINOR_VERSION) -#define HECI_DRV_VER2 __stringify(QUICK_FIX_NUMBER) "." __stringify(VER_BUILD) - -#define HECI_DRIVER_VERSION HECI_DRV_VER1 "." HECI_DRV_VER2 - -#endif diff --git a/drivers/staging/heci/interrupt.c b/drivers/staging/heci/interrupt.c deleted file mode 100644 index 2a3a01a62bbf..000000000000 --- a/drivers/staging/heci/interrupt.c +++ /dev/null @@ -1,1555 +0,0 @@ -/* - * Part of Intel(R) Manageability Engine Interface Linux driver - * - * Copyright (c) 2003 - 2008 Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - * - */ - -#include <linux/kthread.h> - -#include "heci.h" -#include "heci_interface.h" - -/* - * interrupt function prototypes - */ -static void heci_bh_handler(struct work_struct *work); -static int heci_bh_read_handler(struct io_heci_list *complete_list, - struct iamt_heci_device *dev, - __s32 *slots); -static int heci_bh_write_handler(struct io_heci_list *complete_list, - struct iamt_heci_device *dev, - __s32 *slots); -static void heci_bh_read_bus_message(struct iamt_heci_device *dev, - struct heci_msg_hdr *heci_hdr); -static int heci_bh_read_pthi_message(struct io_heci_list *complete_list, - struct iamt_heci_device *dev, - struct heci_msg_hdr *heci_hdr); -static int heci_bh_read_client_message(struct io_heci_list *complete_list, - struct iamt_heci_device *dev, - struct heci_msg_hdr *heci_hdr); -static void heci_client_connect_response(struct iamt_heci_device *dev, - struct hbm_client_connect_response *connect_res); -static void heci_client_disconnect_response(struct iamt_heci_device *dev, - struct hbm_client_connect_response *disconnect_res); -static void heci_client_flow_control_response(struct iamt_heci_device *dev, - struct hbm_flow_control *flow_control); -static void heci_client_disconnect_request(struct iamt_heci_device *dev, - struct hbm_client_disconnect_request *disconnect_req); - - -/** - * heci_isr_interrupt - The ISR of the HECI device - * - * @irq: The irq number - * @dev_id: pointer to the device structure - * - * returns irqreturn_t - */ -irqreturn_t heci_isr_interrupt(int irq, void *dev_id) -{ - int err; - struct iamt_heci_device *dev = (struct iamt_heci_device *) dev_id; - - dev->host_hw_state = read_heci_register(dev, H_CSR); - - if ((dev->host_hw_state & H_IS) != H_IS) - return IRQ_NONE; - - /* disable interrupts */ - heci_csr_disable_interrupts(dev); - - /* clear H_IS bit in H_CSR */ - heci_csr_clear_his(dev); - - /* - * Our device interrupted, schedule work the heci_bh_handler - * to handle the interrupt processing. This needs to be a - * workqueue item since the handler can sleep. - */ - PREPARE_WORK(&dev->work, heci_bh_handler); - DBG("schedule work the heci_bh_handler.\n"); - err = schedule_work(&dev->work); - if (!err) - DBG("heci_bh_handler was already on the workqueue.\n"); - return IRQ_HANDLED; -} - -/** - * _heci_cmpl - process completed operation. - * - * @file_ext: private data of the file object. - * @priv_cb_pos: callback block. - */ -static void _heci_cmpl(struct heci_file_private *file_ext, - struct heci_cb_private *priv_cb_pos) -{ - if (priv_cb_pos->major_file_operations == HECI_WRITE) { - heci_free_cb_private(priv_cb_pos); - DBG("completing write call back.\n"); - file_ext->writing_state = HECI_WRITE_COMPLETE; - if ((&file_ext->tx_wait) && - waitqueue_active(&file_ext->tx_wait)) - wake_up_interruptible(&file_ext->tx_wait); - - } else if (priv_cb_pos->major_file_operations == HECI_READ - && HECI_READING == file_ext->reading_state) { - DBG("completing read call back information= %lu\n", - priv_cb_pos->information); - file_ext->reading_state = HECI_READ_COMPLETE; - if ((&file_ext->rx_wait) && - waitqueue_active(&file_ext->rx_wait)) - wake_up_interruptible(&file_ext->rx_wait); - - } -} - -/** - * _heci_cmpl_iamthif - process completed iamthif operation. - * - * @dev: Device object for our driver. - * @priv_cb_pos: callback block. - */ -static void _heci_cmpl_iamthif(struct iamt_heci_device *dev, - struct heci_cb_private *priv_cb_pos) -{ - if (dev->iamthif_canceled != 1) { - dev->iamthif_state = HECI_IAMTHIF_READ_COMPLETE; - dev->iamthif_stall_timer = 0; - memcpy(priv_cb_pos->response_buffer.data, - dev->iamthif_msg_buf, - dev->iamthif_msg_buf_index); - list_add_tail(&priv_cb_pos->cb_list, - &dev->pthi_read_complete_list.heci_cb.cb_list); - DBG("pthi read completed.\n"); - } else { - run_next_iamthif_cmd(dev); - } - if (&dev->iamthif_file_ext.wait) { - DBG("completing pthi call back.\n"); - wake_up_interruptible(&dev->iamthif_file_ext.wait); - } -} -/** - * heci_bh_handler - function called after ISR to handle the interrupt - * processing. - * - * @work: pointer to the work structure - * - * NOTE: This function is called by schedule work - */ -static void heci_bh_handler(struct work_struct *work) -{ - struct iamt_heci_device *dev = - container_of(work, struct iamt_heci_device, work); - struct io_heci_list complete_list; - __s32 slots; - int rets; - struct heci_cb_private *cb_pos = NULL, *cb_next = NULL; - struct heci_file_private *file_ext; - int bus_message_received = 0; - struct task_struct *tsk; - - DBG("function called after ISR to handle the interrupt processing.\n"); - /* initialize our complete list */ - spin_lock_bh(&dev->device_lock); - heci_initialize_list(&complete_list, dev); - dev->host_hw_state = read_heci_register(dev, H_CSR); - dev->me_hw_state = read_heci_register(dev, ME_CSR_HA); - - /* check if ME wants a reset */ - if (((dev->me_hw_state & ME_RDY_HRA) == 0) - && (dev->heci_state != HECI_RESETING) - && (dev->heci_state != HECI_INITIALIZING)) { - DBG("FW not ready.\n"); - heci_reset(dev, 1); - spin_unlock_bh(&dev->device_lock); - return; - } - - /* check if we need to start the dev */ - if ((dev->host_hw_state & H_RDY) == 0) { - if ((dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA) { - DBG("we need to start the dev.\n"); - dev->host_hw_state |= (H_IE | H_IG | H_RDY); - heci_set_csr_register(dev); - if (dev->heci_state == HECI_INITIALIZING) { - dev->recvd_msg = 1; - spin_unlock_bh(&dev->device_lock); - wake_up_interruptible(&dev->wait_recvd_msg); - return; - - } else { - spin_unlock_bh(&dev->device_lock); - tsk = kthread_run(heci_task_initialize_clients, - dev, "heci_reinit"); - if (IS_ERR(tsk)) { - int rc = PTR_ERR(tsk); - printk(KERN_WARNING "heci: Unable to" - "start the heci thread: %d\n", rc); - } - return; - } - } else { - DBG("enable interrupt FW not ready.\n"); - heci_csr_enable_interrupts(dev); - spin_unlock_bh(&dev->device_lock); - return; - } - } - /* check slots avalable for reading */ - slots = count_full_read_slots(dev); - DBG("slots =%08x extra_write_index =%08x.\n", - slots, dev->extra_write_index); - while ((slots > 0) && (!dev->extra_write_index)) { - DBG("slots =%08x extra_write_index =%08x.\n", slots, - dev->extra_write_index); - DBG("call heci_bh_read_handler.\n"); - rets = heci_bh_read_handler(&complete_list, dev, &slots); - if (rets != 0) - goto end; - } - rets = heci_bh_write_handler(&complete_list, dev, &slots); -end: - DBG("end of bottom half function.\n"); - dev->host_hw_state = read_heci_register(dev, H_CSR); - dev->host_buffer_is_empty = host_buffer_is_empty(dev); - - if ((dev->host_hw_state & H_IS) == H_IS) { - /* acknowledge interrupt and disable interrupts */ - heci_csr_disable_interrupts(dev); - - /* clear H_IS bit in H_CSR */ - heci_csr_clear_his(dev); - - PREPARE_WORK(&dev->work, heci_bh_handler); - DBG("schedule work the heci_bh_handler.\n"); - rets = schedule_work(&dev->work); - if (!rets) - DBG("heci_bh_handler was already queued.\n"); - } else { - heci_csr_enable_interrupts(dev); - } - - if (dev->recvd_msg && waitqueue_active(&dev->wait_recvd_msg)) { - DBG("received waiting bus message\n"); - bus_message_received = 1; - } - spin_unlock_bh(&dev->device_lock); - if (bus_message_received) { - DBG("wake up dev->wait_recvd_msg\n"); - wake_up_interruptible(&dev->wait_recvd_msg); - bus_message_received = 0; - } - if ((complete_list.status != 0) - || list_empty(&complete_list.heci_cb.cb_list)) - return; - - - list_for_each_entry_safe(cb_pos, cb_next, - &complete_list.heci_cb.cb_list, cb_list) { - file_ext = (struct heci_file_private *)cb_pos->file_private; - list_del(&cb_pos->cb_list); - if (file_ext != NULL) { - if (file_ext != &dev->iamthif_file_ext) { - DBG("completing call back.\n"); - _heci_cmpl(file_ext, cb_pos); - cb_pos = NULL; - } else if (file_ext == &dev->iamthif_file_ext) { - _heci_cmpl_iamthif(dev, cb_pos); - } - } - } -} - - -/** - * heci_bh_read_handler - bottom half read routine after ISR to - * handle the read processing. - * - * @cmpl_list: An instance of our list structure - * @dev: Device object for our driver - * @slots: slots to read. - * - * returns 0 on success, <0 on failure. - */ -static int heci_bh_read_handler(struct io_heci_list *cmpl_list, - struct iamt_heci_device *dev, - __s32 *slots) -{ - struct heci_msg_hdr *heci_hdr; - int ret = 0; - struct heci_file_private *file_pos = NULL; - struct heci_file_private *file_next = NULL; - - if (!dev->rd_msg_hdr) { - dev->rd_msg_hdr = read_heci_register(dev, ME_CB_RW); - DBG("slots=%08x.\n", *slots); - (*slots)--; - DBG("slots=%08x.\n", *slots); - } - heci_hdr = (struct heci_msg_hdr *) &dev->rd_msg_hdr; - DBG("heci_hdr->length =%d\n", heci_hdr->length); - - if ((heci_hdr->reserved) || !(dev->rd_msg_hdr)) { - DBG("corrupted message header.\n"); - ret = -ECORRUPTED_MESSAGE_HEADER; - goto end; - } - - if ((heci_hdr->host_addr) || (heci_hdr->me_addr)) { - list_for_each_entry_safe(file_pos, file_next, - &dev->file_list, link) { - DBG("list_for_each_entry_safe read host" - " client = %d, ME client = %d\n", - file_pos->host_client_id, - file_pos->me_client_id); - if ((file_pos->host_client_id == heci_hdr->host_addr) - && (file_pos->me_client_id == heci_hdr->me_addr)) - break; - } - - if (&file_pos->link == &dev->file_list) { - DBG("corrupted message header\n"); - ret = -ECORRUPTED_MESSAGE_HEADER; - goto end; - } - } - if (((*slots) * sizeof(__u32)) < heci_hdr->length) { - DBG("we can't read the message slots=%08x.\n", *slots); - /* we can't read the message */ - ret = -ERANGE; - goto end; - } - - /* decide where to read the message too */ - if (!heci_hdr->host_addr) { - DBG("call heci_bh_read_bus_message.\n"); - heci_bh_read_bus_message(dev, heci_hdr); - DBG("end heci_bh_read_bus_message.\n"); - } else if ((heci_hdr->host_addr == dev->iamthif_file_ext.host_client_id) - && (HECI_FILE_CONNECTED == dev->iamthif_file_ext.state) - && (dev->iamthif_state == HECI_IAMTHIF_READING)) { - DBG("call heci_bh_read_iamthif_message.\n"); - DBG("heci_hdr->length =%d\n", heci_hdr->length); - ret = heci_bh_read_pthi_message(cmpl_list, dev, heci_hdr); - if (ret != 0) - goto end; - - } else { - DBG("call heci_bh_read_client_message.\n"); - ret = heci_bh_read_client_message(cmpl_list, dev, heci_hdr); - if (ret != 0) - goto end; - - } - - /* reset the number of slots and header */ - *slots = count_full_read_slots(dev); - dev->rd_msg_hdr = 0; - - if (*slots == -ESLOTS_OVERFLOW) { - /* overflow - reset */ - DBG("reseting due to slots overflow.\n"); - /* set the event since message has been read */ - ret = -ERANGE; - goto end; - } -end: - return ret; -} - - -/** - * heci_bh_read_bus_message - bottom half read routine after ISR to - * handle the read bus message cmd processing. - * - * @dev: Device object for our driver - * @heci_hdr: header of bus message - */ -static void heci_bh_read_bus_message(struct iamt_heci_device *dev, - struct heci_msg_hdr *heci_hdr) -{ - struct heci_bus_message *heci_msg; - struct hbm_host_version_response *version_res; - struct hbm_client_connect_response *connect_res; - struct hbm_client_connect_response *disconnect_res; - struct hbm_flow_control *flow_control; - struct hbm_props_response *props_res; - struct hbm_host_enum_response *enum_res; - struct hbm_client_disconnect_request *disconnect_req; - struct hbm_host_stop_request *h_stop_req; - int i; - unsigned char *buffer; - - /* read the message to our buffer */ - buffer = (unsigned char *) dev->rd_msg_buf; - BUG_ON(heci_hdr->length >= sizeof(dev->rd_msg_buf)); - heci_read_slots(dev, buffer, heci_hdr->length); - heci_msg = (struct heci_bus_message *) buffer; - - switch (*(__u8 *) heci_msg) { - case HOST_START_RES_CMD: - version_res = (struct hbm_host_version_response *) heci_msg; - if (version_res->host_version_supported) { - dev->version.major_version = HBM_MAJOR_VERSION; - dev->version.minor_version = HBM_MINOR_VERSION; - } else { - dev->version = version_res->me_max_version; - } - dev->recvd_msg = 1; - DBG("host start response message received.\n"); - break; - - case CLIENT_CONNECT_RES_CMD: - connect_res = - (struct hbm_client_connect_response *) heci_msg; - heci_client_connect_response(dev, connect_res); - DBG("client connect response message received.\n"); - wake_up(&dev->wait_recvd_msg); - break; - - case CLIENT_DISCONNECT_RES_CMD: - disconnect_res = - (struct hbm_client_connect_response *) heci_msg; - heci_client_disconnect_response(dev, disconnect_res); - DBG("client disconnect response message received.\n"); - wake_up(&dev->wait_recvd_msg); - break; - - case HECI_FLOW_CONTROL_CMD: - flow_control = (struct hbm_flow_control *) heci_msg; - heci_client_flow_control_response(dev, flow_control); - DBG("client flow control response message received.\n"); - break; - - case HOST_CLIENT_PROPERTEIS_RES_CMD: - props_res = (struct hbm_props_response *) heci_msg; - if (props_res->status != 0) { - BUG(); - break; - } - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (dev->me_clients[i].client_id == - props_res->address) { - dev->me_clients[i].props = - props_res->client_properties; - break; - } - - } - dev->recvd_msg = 1; - break; - - case HOST_ENUM_RES_CMD: - enum_res = (struct hbm_host_enum_response *) heci_msg; - memcpy(dev->heci_me_clients, enum_res->valid_addresses, 32); - dev->recvd_msg = 1; - break; - - case HOST_STOP_RES_CMD: - dev->heci_state = HECI_DISABLED; - DBG("reseting because of FW stop response.\n"); - heci_reset(dev, 1); - break; - - case CLIENT_DISCONNECT_REQ_CMD: - /* search for client */ - disconnect_req = - (struct hbm_client_disconnect_request *) heci_msg; - heci_client_disconnect_request(dev, disconnect_req); - break; - - case ME_STOP_REQ_CMD: - /* prepare stop request */ - heci_hdr = (struct heci_msg_hdr *) &dev->ext_msg_buf[0]; - heci_hdr->host_addr = 0; - heci_hdr->me_addr = 0; - heci_hdr->length = sizeof(struct hbm_host_stop_request); - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - h_stop_req = - (struct hbm_host_stop_request *) &dev->ext_msg_buf[1]; - memset(h_stop_req, 0, sizeof(struct hbm_host_stop_request)); - h_stop_req->cmd.cmd = HOST_STOP_REQ_CMD; - h_stop_req->reason = DRIVER_STOP_REQUEST; - h_stop_req->reserved[0] = 0; - h_stop_req->reserved[1] = 0; - dev->extra_write_index = 2; - break; - - default: - BUG(); - break; - - } -} - -/** - * heci_bh_read_pthi_message - bottom half read routine after ISR to - * handle the read pthi message data processing. - * - * @complete_list: An instance of our list structure - * @dev: Device object for our driver - * @heci_hdr: header of pthi message - * - * returns 0 on success, <0 on failure. - */ -static int heci_bh_read_pthi_message(struct io_heci_list *complete_list, - struct iamt_heci_device *dev, - struct heci_msg_hdr *heci_hdr) -{ - struct heci_file_private *file_ext; - struct heci_cb_private *priv_cb; - unsigned char *buffer; - - BUG_ON(heci_hdr->me_addr != dev->iamthif_file_ext.me_client_id); - BUG_ON(dev->iamthif_state != HECI_IAMTHIF_READING); - - buffer = (unsigned char *) (dev->iamthif_msg_buf + - dev->iamthif_msg_buf_index); - BUG_ON(sizeof(dev->iamthif_msg_buf) < - (dev->iamthif_msg_buf_index + heci_hdr->length)); - - heci_read_slots(dev, buffer, heci_hdr->length); - - dev->iamthif_msg_buf_index += heci_hdr->length; - - if (!(heci_hdr->msg_complete)) - return 0; - - DBG("pthi_message_buffer_index=%d\n", heci_hdr->length); - DBG("completed pthi read.\n "); - if (!dev->iamthif_current_cb) - return -ENODEV; - - priv_cb = dev->iamthif_current_cb; - dev->iamthif_current_cb = NULL; - - file_ext = (struct heci_file_private *)priv_cb->file_private; - if (!file_ext) - return -ENODEV; - - dev->iamthif_stall_timer = 0; - priv_cb->information = dev->iamthif_msg_buf_index; - priv_cb->read_time = get_seconds(); - if ((dev->iamthif_ioctl) && (file_ext == &dev->iamthif_file_ext)) { - /* found the iamthif cb */ - DBG("complete the pthi read cb.\n "); - if (&dev->iamthif_file_ext) { - DBG("add the pthi read cb to complete.\n "); - list_add_tail(&priv_cb->cb_list, - &complete_list->heci_cb.cb_list); - } - } - return 0; -} - -/** - * _heci_bh_state_ok - check if heci header matches file private data - * - * @file_ext: private data of the file object - * @heci_hdr: header of heci client message - * - * returns !=0 if matches, 0 if no match. - */ -static int _heci_bh_state_ok(struct heci_file_private *file_ext, - struct heci_msg_hdr *heci_hdr) -{ - return ((file_ext->host_client_id == heci_hdr->host_addr) - && (file_ext->me_client_id == heci_hdr->me_addr) - && (file_ext->state == HECI_FILE_CONNECTED) - && (HECI_READ_COMPLETE != file_ext->reading_state)); -} - -/** - * heci_bh_read_client_message - bottom half read routine after ISR to - * handle the read heci client message data processing. - * - * @complete_list: An instance of our list structure - * @dev: Device object for our driver - * @heci_hdr: header of heci client message - * - * returns 0 on success, <0 on failure. - */ -static int heci_bh_read_client_message(struct io_heci_list *complete_list, - struct iamt_heci_device *dev, - struct heci_msg_hdr *heci_hdr) -{ - struct heci_file_private *file_ext; - struct heci_cb_private *priv_cb_pos = NULL, *priv_cb_next = NULL; - unsigned char *buffer = NULL; - - DBG("start client msg\n"); - if (!((dev->read_list.status == 0) && - !list_empty(&dev->read_list.heci_cb.cb_list))) - goto quit; - - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - &dev->read_list.heci_cb.cb_list, cb_list) { - file_ext = (struct heci_file_private *) - priv_cb_pos->file_private; - if ((file_ext != NULL) && - (_heci_bh_state_ok(file_ext, heci_hdr))) { - spin_lock_bh(&file_ext->read_io_lock); - file_ext->reading_state = HECI_READING; - buffer = (unsigned char *) - (priv_cb_pos->response_buffer.data + - priv_cb_pos->information); - BUG_ON(priv_cb_pos->response_buffer.size < - heci_hdr->length + - priv_cb_pos->information); - - if (priv_cb_pos->response_buffer.size < - heci_hdr->length + - priv_cb_pos->information) { - DBG("message overflow.\n"); - list_del(&priv_cb_pos->cb_list); - spin_unlock_bh(&file_ext->read_io_lock); - return -ENOMEM; - } - if (buffer) { - heci_read_slots(dev, buffer, - heci_hdr->length); - } - priv_cb_pos->information += heci_hdr->length; - if (heci_hdr->msg_complete) { - file_ext->status = 0; - list_del(&priv_cb_pos->cb_list); - spin_unlock_bh(&file_ext->read_io_lock); - DBG("completed read host client = %d," - "ME client = %d, " - "data length = %lu\n", - file_ext->host_client_id, - file_ext->me_client_id, - priv_cb_pos->information); - - *(priv_cb_pos->response_buffer.data + - priv_cb_pos->information) = '\0'; - DBG("priv_cb_pos->res_buffer - %s\n", - priv_cb_pos->response_buffer.data); - list_add_tail(&priv_cb_pos->cb_list, - &complete_list->heci_cb.cb_list); - } else { - spin_unlock_bh(&file_ext->read_io_lock); - } - - break; - } - - } - -quit: - DBG("message read\n"); - if (!buffer) { - heci_read_slots(dev, (unsigned char *) dev->rd_msg_buf, - heci_hdr->length); - DBG("discarding message, header=%08x.\n", - *(__u32 *) dev->rd_msg_buf); - } - - return 0; -} - -/** - * _heci_bh_iamthif_read - prepare to read iamthif data. - * - * @dev: Device object for our driver. - * @slots: free slots. - * - * returns 0, OK; otherwise, error. - */ -static int _heci_bh_iamthif_read(struct iamt_heci_device *dev, __s32 *slots) -{ - - if (((*slots) * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) - + sizeof(struct hbm_flow_control))) { - *slots -= (sizeof(struct heci_msg_hdr) + - sizeof(struct hbm_flow_control) + 3) / 4; - if (!heci_send_flow_control(dev, &dev->iamthif_file_ext)) { - DBG("iamthif flow control failed\n"); - } else { - DBG("iamthif flow control success\n"); - dev->iamthif_state = HECI_IAMTHIF_READING; - dev->iamthif_flow_control_pending = 0; - dev->iamthif_msg_buf_index = 0; - dev->iamthif_msg_buf_size = 0; - dev->iamthif_stall_timer = IAMTHIF_STALL_TIMER; - dev->host_buffer_is_empty = host_buffer_is_empty(dev); - } - return 0; - } else { - return -ECOMPLETE_MESSAGE; - } -} - -/** - * _heci_bh_close - process close related operation. - * - * @dev: Device object for our driver. - * @slots: free slots. - * @priv_cb_pos: callback block. - * @file_ext: private data of the file object. - * @cmpl_list: complete list. - * - * returns 0, OK; otherwise, error. - */ -static int _heci_bh_close(struct iamt_heci_device *dev, __s32 *slots, - struct heci_cb_private *priv_cb_pos, - struct heci_file_private *file_ext, - struct io_heci_list *cmpl_list) -{ - if ((*slots * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + - sizeof(struct hbm_client_disconnect_request))) { - *slots -= (sizeof(struct heci_msg_hdr) + - sizeof(struct hbm_client_disconnect_request) + 3) / 4; - - if (!heci_disconnect(dev, file_ext)) { - file_ext->status = 0; - priv_cb_pos->information = 0; - list_move_tail(&priv_cb_pos->cb_list, - &cmpl_list->heci_cb.cb_list); - return -ECOMPLETE_MESSAGE; - } else { - file_ext->state = HECI_FILE_DISCONNECTING; - file_ext->status = 0; - priv_cb_pos->information = 0; - list_move_tail(&priv_cb_pos->cb_list, - &dev->ctrl_rd_list.heci_cb.cb_list); - file_ext->timer_count = HECI_CONNECT_TIMEOUT; - } - } else { - /* return the cancel routine */ - return -ECORRUPTED_MESSAGE_HEADER; - } - - return 0; -} - -/** - * _heci_hb_close - process read related operation. - * - * @dev: Device object for our driver. - * @slots: free slots. - * @priv_cb_pos: callback block. - * @file_ext: private data of the file object. - * @cmpl_list: complete list. - * - * returns 0, OK; otherwise, error. - */ -static int _heci_bh_read(struct iamt_heci_device *dev, __s32 *slots, - struct heci_cb_private *priv_cb_pos, - struct heci_file_private *file_ext, - struct io_heci_list *cmpl_list) -{ - if ((*slots * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + - sizeof(struct hbm_flow_control))) { - *slots -= (sizeof(struct heci_msg_hdr) + - sizeof(struct hbm_flow_control) + 3) / 4; - if (!heci_send_flow_control(dev, file_ext)) { - file_ext->status = -ENODEV; - priv_cb_pos->information = 0; - list_move_tail(&priv_cb_pos->cb_list, - &cmpl_list->heci_cb.cb_list); - return -ENODEV; - } else { - list_move_tail(&priv_cb_pos->cb_list, - &dev->read_list.heci_cb.cb_list); - } - } else { - /* return the cancel routine */ - list_del(&priv_cb_pos->cb_list); - return -ECORRUPTED_MESSAGE_HEADER; - } - - return 0; -} - - -/** - * _heci_bh_ioctl - process ioctl related operation. - * - * @dev: Device object for our driver. - * @slots: free slots. - * @priv_cb_pos: callback block. - * @file_ext: private data of the file object. - * @cmpl_list: complete list. - * - * returns 0, OK; otherwise, error. - */ -static int _heci_bh_ioctl(struct iamt_heci_device *dev, __s32 *slots, - struct heci_cb_private *priv_cb_pos, - struct heci_file_private *file_ext, - struct io_heci_list *cmpl_list) -{ - if ((*slots * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + - sizeof(struct hbm_client_connect_request))) { - file_ext->state = HECI_FILE_CONNECTING; - *slots -= (sizeof(struct heci_msg_hdr) + - sizeof(struct hbm_client_connect_request) + 3) / 4; - if (!heci_connect(dev, file_ext)) { - file_ext->status = -ENODEV; - priv_cb_pos->information = 0; - list_del(&priv_cb_pos->cb_list); - return -ENODEV; - } else { - list_move_tail(&priv_cb_pos->cb_list, - &dev->ctrl_rd_list.heci_cb.cb_list); - file_ext->timer_count = HECI_CONNECT_TIMEOUT; - } - } else { - /* return the cancel routine */ - list_del(&priv_cb_pos->cb_list); - return -ECORRUPTED_MESSAGE_HEADER; - } - - return 0; -} - -/** - * _heci_bh_cmpl - process completed and no-iamthif operation. - * - * @dev: Device object for our driver. - * @slots: free slots. - * @priv_cb_pos: callback block. - * @file_ext: private data of the file object. - * @cmpl_list: complete list. - * - * returns 0, OK; otherwise, error. - */ -static int _heci_bh_cmpl(struct iamt_heci_device *dev, __s32 *slots, - struct heci_cb_private *priv_cb_pos, - struct heci_file_private *file_ext, - struct io_heci_list *cmpl_list) -{ - struct heci_msg_hdr *heci_hdr; - - if ((*slots * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + - (priv_cb_pos->request_buffer.size - - priv_cb_pos->information))) { - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - heci_hdr->host_addr = file_ext->host_client_id; - heci_hdr->me_addr = file_ext->me_client_id; - heci_hdr->length = ((priv_cb_pos->request_buffer.size) - - (priv_cb_pos->information)); - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - DBG("priv_cb_pos->request_buffer.size =%d" - "heci_hdr->msg_complete= %d\n", - priv_cb_pos->request_buffer.size, - heci_hdr->msg_complete); - DBG("priv_cb_pos->information =%lu\n", - priv_cb_pos->information); - DBG("heci_hdr->length =%d\n", - heci_hdr->length); - *slots -= (sizeof(struct heci_msg_hdr) + - heci_hdr->length + 3) / 4; - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) - (priv_cb_pos->request_buffer.data + - priv_cb_pos->information), - heci_hdr->length)) { - file_ext->status = -ENODEV; - list_move_tail(&priv_cb_pos->cb_list, - &cmpl_list->heci_cb.cb_list); - return -ENODEV; - } else { - flow_ctrl_reduce(dev, file_ext); - file_ext->status = 0; - priv_cb_pos->information += heci_hdr->length; - list_move_tail(&priv_cb_pos->cb_list, - &dev->write_waiting_list.heci_cb.cb_list); - } - } else if (*slots == ((dev->host_hw_state & H_CBD) >> 24)) { - /* buffer is still empty */ - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - heci_hdr->host_addr = file_ext->host_client_id; - heci_hdr->me_addr = file_ext->me_client_id; - heci_hdr->length = - (*slots * sizeof(__u32)) - sizeof(struct heci_msg_hdr); - heci_hdr->msg_complete = 0; - heci_hdr->reserved = 0; - - (*slots) -= (sizeof(struct heci_msg_hdr) + - heci_hdr->length + 3) / 4; - if (!heci_write_message(dev, heci_hdr, - (unsigned char *) - (priv_cb_pos->request_buffer.data + - priv_cb_pos->information), - heci_hdr->length)) { - file_ext->status = -ENODEV; - list_move_tail(&priv_cb_pos->cb_list, - &cmpl_list->heci_cb.cb_list); - return -ENODEV; - } else { - priv_cb_pos->information += heci_hdr->length; - DBG("priv_cb_pos->request_buffer.size =%d" - " heci_hdr->msg_complete= %d\n", - priv_cb_pos->request_buffer.size, - heci_hdr->msg_complete); - DBG("priv_cb_pos->information =%lu\n", - priv_cb_pos->information); - DBG("heci_hdr->length =%d\n", heci_hdr->length); - } - return -ECOMPLETE_MESSAGE; - } else { - return -ECORRUPTED_MESSAGE_HEADER; - } - - return 0; -} - -/** - * _heci_bh_cmpl_iamthif - process completed iamthif operation. - * - * @dev: Device object for our driver. - * @slots: free slots. - * @priv_cb_pos: callback block. - * @file_ext: private data of the file object. - * @cmpl_list: complete list. - * - * returns 0, OK; otherwise, error. - */ -static int _heci_bh_cmpl_iamthif(struct iamt_heci_device *dev, __s32 *slots, - struct heci_cb_private *priv_cb_pos, - struct heci_file_private *file_ext, - struct io_heci_list *cmpl_list) -{ - struct heci_msg_hdr *heci_hdr; - - if ((*slots * sizeof(__u32)) >= (sizeof(struct heci_msg_hdr) + - dev->iamthif_msg_buf_size - - dev->iamthif_msg_buf_index)) { - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - heci_hdr->host_addr = file_ext->host_client_id; - heci_hdr->me_addr = file_ext->me_client_id; - heci_hdr->length = dev->iamthif_msg_buf_size - - dev->iamthif_msg_buf_index; - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - - *slots -= (sizeof(struct heci_msg_hdr) + - heci_hdr->length + 3) / 4; - - if (!heci_write_message(dev, heci_hdr, - (dev->iamthif_msg_buf + - dev->iamthif_msg_buf_index), - heci_hdr->length)) { - dev->iamthif_state = HECI_IAMTHIF_IDLE; - file_ext->status = -ENODEV; - list_del(&priv_cb_pos->cb_list); - return -ENODEV; - } else { - flow_ctrl_reduce(dev, file_ext); - dev->iamthif_msg_buf_index += heci_hdr->length; - priv_cb_pos->information = dev->iamthif_msg_buf_index; - file_ext->status = 0; - dev->iamthif_state = HECI_IAMTHIF_FLOW_CONTROL; - dev->iamthif_flow_control_pending = 1; - /* save iamthif cb sent to pthi client */ - dev->iamthif_current_cb = priv_cb_pos; - list_move_tail(&priv_cb_pos->cb_list, - &dev->write_waiting_list.heci_cb.cb_list); - - } - } else if (*slots == ((dev->host_hw_state & H_CBD) >> 24)) { - /* buffer is still empty */ - heci_hdr = (struct heci_msg_hdr *) &dev->wr_msg_buf[0]; - heci_hdr->host_addr = file_ext->host_client_id; - heci_hdr->me_addr = file_ext->me_client_id; - heci_hdr->length = - (*slots * sizeof(__u32)) - sizeof(struct heci_msg_hdr); - heci_hdr->msg_complete = 0; - heci_hdr->reserved = 0; - - *slots -= (sizeof(struct heci_msg_hdr) + - heci_hdr->length + 3) / 4; - - if (!heci_write_message(dev, heci_hdr, - (dev->iamthif_msg_buf + - dev->iamthif_msg_buf_index), - heci_hdr->length)) { - file_ext->status = -ENODEV; - list_del(&priv_cb_pos->cb_list); - } else { - dev->iamthif_msg_buf_index += heci_hdr->length; - } - return -ECOMPLETE_MESSAGE; - } else { - return -ECORRUPTED_MESSAGE_HEADER; - } - - return 0; -} - -/** - * heci_bh_write_handler - bottom half write routine after - * ISR to handle the write processing. - * - * @cmpl_list: An instance of our list structure - * @dev: Device object for our driver - * @slots: slots to write. - * - * returns 0 on success, <0 on failure. - */ -static int heci_bh_write_handler(struct io_heci_list *cmpl_list, - struct iamt_heci_device *dev, - __s32 *slots) -{ - - struct heci_file_private *file_ext; - struct heci_cb_private *priv_cb_pos = NULL, *priv_cb_next = NULL; - struct io_heci_list *list; - int ret; - - if (!host_buffer_is_empty(dev)) { - DBG("host buffer is not empty.\n"); - return 0; - } - dev->write_hang = -1; - *slots = count_empty_write_slots(dev); - /* complete all waiting for write CB */ - DBG("complete all waiting for write cb.\n"); - - list = &dev->write_waiting_list; - if ((list->status == 0) - && !list_empty(&list->heci_cb.cb_list)) { - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - &list->heci_cb.cb_list, cb_list) { - file_ext = (struct heci_file_private *) - priv_cb_pos->file_private; - if (file_ext != NULL) { - file_ext->status = 0; - list_del(&priv_cb_pos->cb_list); - if ((HECI_WRITING == file_ext->writing_state) && - (priv_cb_pos->major_file_operations == - HECI_WRITE) && - (file_ext != &dev->iamthif_file_ext)) { - DBG("HECI WRITE COMPLETE\n"); - file_ext->writing_state = - HECI_WRITE_COMPLETE; - list_add_tail(&priv_cb_pos->cb_list, - &cmpl_list->heci_cb.cb_list); - } - if (file_ext == &dev->iamthif_file_ext) { - DBG("check iamthif flow control.\n"); - if (dev->iamthif_flow_control_pending) { - ret = _heci_bh_iamthif_read(dev, - slots); - if (ret != 0) - return ret; - } - } - } - - } - } - - if ((dev->stop) && (!dev->wd_pending)) { - dev->wd_stoped = 1; - wake_up_interruptible(&dev->wait_stop_wd); - return 0; - } - - if (dev->extra_write_index != 0) { - DBG("extra_write_index =%d.\n", dev->extra_write_index); - heci_write_message(dev, - (struct heci_msg_hdr *) &dev->ext_msg_buf[0], - (unsigned char *) &dev->ext_msg_buf[1], - (dev->extra_write_index - 1) * sizeof(__u32)); - *slots -= dev->extra_write_index; - dev->extra_write_index = 0; - } - if (dev->heci_state == HECI_ENABLED) { - if ((dev->wd_pending) - && flow_ctrl_creds(dev, &dev->wd_file_ext)) { - if (!heci_send_wd(dev)) - DBG("wd send failed.\n"); - else - flow_ctrl_reduce(dev, &dev->wd_file_ext); - - dev->wd_pending = 0; - - if (dev->wd_timeout != 0) { - *slots -= (sizeof(struct heci_msg_hdr) + - HECI_START_WD_DATA_SIZE + 3) / 4; - dev->wd_due_counter = 2; - } else { - *slots -= (sizeof(struct heci_msg_hdr) + - HECI_WD_PARAMS_SIZE + 3) / 4; - dev->wd_due_counter = 0; - } - - } - } - if (dev->stop) - return ~ENODEV; - - /* complete control write list CB */ - if (dev->ctrl_wr_list.status == 0) { - /* complete control write list CB */ - DBG("complete control write list cb.\n"); - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - &dev->ctrl_wr_list.heci_cb.cb_list, cb_list) { - file_ext = (struct heci_file_private *) - priv_cb_pos->file_private; - if (file_ext == NULL) { - list_del(&priv_cb_pos->cb_list); - return -ENODEV; - } - switch (priv_cb_pos->major_file_operations) { - case HECI_CLOSE: - /* send disconnect message */ - ret = _heci_bh_close(dev, slots, - priv_cb_pos, - file_ext, cmpl_list); - if (ret != 0) - return ret; - - break; - case HECI_READ: - /* send flow control message */ - ret = _heci_bh_read(dev, slots, - priv_cb_pos, - file_ext, cmpl_list); - if (ret != 0) - return ret; - - break; - case HECI_IOCTL: - /* connect message */ - if (!other_client_is_connecting(dev, file_ext)) - continue; - ret = _heci_bh_ioctl(dev, slots, - priv_cb_pos, - file_ext, cmpl_list); - if (ret != 0) - return ret; - - break; - - default: - BUG(); - } - - } - } - /* complete write list CB */ - if ((dev->write_list.status == 0) - && !list_empty(&dev->write_list.heci_cb.cb_list)) { - DBG("complete write list cb.\n"); - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - &dev->write_list.heci_cb.cb_list, cb_list) { - file_ext = (struct heci_file_private *) - priv_cb_pos->file_private; - - if (file_ext != NULL) { - if (file_ext != &dev->iamthif_file_ext) { - if (!flow_ctrl_creds(dev, file_ext)) { - DBG("No flow control" - " credentials for client" - " %d, not sending.\n", - file_ext->host_client_id); - continue; - } - ret = _heci_bh_cmpl(dev, slots, - priv_cb_pos, - file_ext, - cmpl_list); - if (ret != 0) - return ret; - - } else if (file_ext == &dev->iamthif_file_ext) { - /* IAMTHIF IOCTL */ - DBG("complete pthi write cb.\n"); - if (!flow_ctrl_creds(dev, file_ext)) { - DBG("No flow control" - " credentials for pthi" - " client %d.\n", - file_ext->host_client_id); - continue; - } - ret = _heci_bh_cmpl_iamthif(dev, slots, - priv_cb_pos, - file_ext, - cmpl_list); - if (ret != 0) - return ret; - - } - } - - } - } - return 0; -} - - -/** - * is_treat_specially_client - check if the message belong - * to the file private data. - * - * @file_ext: private data of the file object - * @rs: connect response bus message - * @dev: Device object for our driver - * - * returns 0 on success, <0 on failure. - */ -static int is_treat_specially_client(struct heci_file_private *file_ext, - struct hbm_client_connect_response *rs) -{ - int ret = 0; - - if ((file_ext->host_client_id == rs->host_addr) && - (file_ext->me_client_id == rs->me_addr)) { - if (rs->status == 0) { - DBG("client connect status = 0x%08x.\n", rs->status); - file_ext->state = HECI_FILE_CONNECTED; - file_ext->status = 0; - } else { - DBG("client connect status = 0x%08x.\n", rs->status); - file_ext->state = HECI_FILE_DISCONNECTED; - file_ext->status = -ENODEV; - } - ret = 1; - } - DBG("client state = %d.\n", file_ext->state); - return ret; -} - -/** - * heci_client_connect_response - connect response bh routine - * - * @dev: Device object for our driver - * @rs: connect response bus message - */ -static void heci_client_connect_response(struct iamt_heci_device *dev, - struct hbm_client_connect_response *rs) -{ - - struct heci_file_private *file_ext; - struct heci_cb_private *priv_cb_pos = NULL, *priv_cb_next = NULL; - - /* if WD or iamthif client treat specially */ - - if ((is_treat_specially_client(&(dev->wd_file_ext), rs)) || - (is_treat_specially_client(&(dev->iamthif_file_ext), rs))) - return; - - if (dev->ctrl_rd_list.status == 0 - && !list_empty(&dev->ctrl_rd_list.heci_cb.cb_list)) { - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - &dev->ctrl_rd_list.heci_cb.cb_list, cb_list) { - file_ext = (struct heci_file_private *) - priv_cb_pos->file_private; - if (file_ext == NULL) { - list_del(&priv_cb_pos->cb_list); - return; - } - if (HECI_IOCTL == priv_cb_pos->major_file_operations) { - if (is_treat_specially_client(file_ext, rs)) { - list_del(&priv_cb_pos->cb_list); - file_ext->status = 0; - file_ext->timer_count = 0; - break; - } - } - } - } -} - -/** - * heci_client_disconnect_response - disconnect response bh routine - * - * @dev: Device object for our driver - * @rs: disconnect response bus message - */ -static void heci_client_disconnect_response(struct iamt_heci_device *dev, - struct hbm_client_connect_response *rs) -{ - struct heci_file_private *file_ext; - struct heci_cb_private *priv_cb_pos = NULL, *priv_cb_next = NULL; - - if (dev->ctrl_rd_list.status == 0 - && !list_empty(&dev->ctrl_rd_list.heci_cb.cb_list)) { - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - &dev->ctrl_rd_list.heci_cb.cb_list, cb_list) { - file_ext = (struct heci_file_private *) - priv_cb_pos->file_private; - - if (file_ext == NULL) { - list_del(&priv_cb_pos->cb_list); - return; - } - - DBG("list_for_each_entry_safe in ctrl_rd_list.\n"); - if ((file_ext->host_client_id == rs->host_addr) && - (file_ext->me_client_id == rs->me_addr)) { - - list_del(&priv_cb_pos->cb_list); - if (rs->status == 0) { - file_ext->state = - HECI_FILE_DISCONNECTED; - } - - file_ext->status = 0; - file_ext->timer_count = 0; - break; - } - } - } -} - -/** - * same_flow_addr - tell they have same address. - * - * @file: private data of the file object. - * @flow: flow control. - * - * returns !=0, same; 0,not. - */ -static int same_flow_addr(struct heci_file_private *file, - struct hbm_flow_control *flow) -{ - return ((file->host_client_id == flow->host_addr) - && (file->me_client_id == flow->me_addr)); -} - -/** - * add_single_flow_creds - add single buffer credentials. - * - * @file: private data ot the file object. - * @flow: flow control. - */ -static void add_single_flow_creds(struct iamt_heci_device *dev, - struct hbm_flow_control *flow) -{ - struct heci_me_client *client; - int i; - - for (i = 0; i < dev->num_heci_me_clients; i++) { - client = &dev->me_clients[i]; - if ((client != NULL) && - (flow->me_addr == client->client_id)) { - if (client->props.single_recv_buf != 0) { - client->flow_ctrl_creds++; - DBG("recv flow ctrl msg ME %d (single).\n", - flow->me_addr); - DBG("flow control credentials=%d.\n", - client->flow_ctrl_creds); - } else { - BUG(); /* error in flow control */ - } - } - } -} - -/** - * heci_client_flow_control_response - flow control response bh routine - * - * @dev: Device object for our driver - * @flow_control: flow control response bus message - */ -static void heci_client_flow_control_response(struct iamt_heci_device *dev, - struct hbm_flow_control *flow_control) -{ - struct heci_file_private *file_pos = NULL; - struct heci_file_private *file_next = NULL; - - if (flow_control->host_addr == 0) { - /* single receive buffer */ - add_single_flow_creds(dev, flow_control); - } else { - /* normal connection */ - list_for_each_entry_safe(file_pos, file_next, - &dev->file_list, link) { - DBG("list_for_each_entry_safe in file_list\n"); - - DBG("file_ext of host client %d ME client %d.\n", - file_pos->host_client_id, - file_pos->me_client_id); - DBG("flow ctrl msg for host %d ME %d.\n", - flow_control->host_addr, - flow_control->me_addr); - if (same_flow_addr(file_pos, flow_control)) { - DBG("recv ctrl msg for host %d ME %d.\n", - flow_control->host_addr, - flow_control->me_addr); - file_pos->flow_ctrl_creds++; - DBG("flow control credentials=%d.\n", - file_pos->flow_ctrl_creds); - break; - } - } - } -} - -/** - * same_disconn_addr - tell they have same address - * - * @file: private data of the file object. - * @disconn: disconnection request. - * - * returns !=0, same; 0,not. - */ -static int same_disconn_addr(struct heci_file_private *file, - struct hbm_client_disconnect_request *disconn) -{ - return ((file->host_client_id == disconn->host_addr) - && (file->me_client_id == disconn->me_addr)); -} - -/** - * heci_client_disconnect_request - disconnect request bh routine - * - * @dev: Device object for our driver. - * @disconnect_req: disconnect request bus message. - */ -static void heci_client_disconnect_request(struct iamt_heci_device *dev, - struct hbm_client_disconnect_request *disconnect_req) -{ - struct heci_msg_hdr *heci_hdr; - struct hbm_client_connect_response *disconnect_res; - struct heci_file_private *file_pos = NULL; - struct heci_file_private *file_next = NULL; - - list_for_each_entry_safe(file_pos, file_next, &dev->file_list, link) { - if (same_disconn_addr(file_pos, disconnect_req)) { - DBG("disconnect request host client %d ME client %d.\n", - disconnect_req->host_addr, - disconnect_req->me_addr); - file_pos->state = HECI_FILE_DISCONNECTED; - file_pos->timer_count = 0; - if (file_pos == &dev->wd_file_ext) { - dev->wd_due_counter = 0; - dev->wd_pending = 0; - } else if (file_pos == &dev->iamthif_file_ext) - dev->iamthif_timer = 0; - - /* prepare disconnect response */ - heci_hdr = - (struct heci_msg_hdr *) &dev->ext_msg_buf[0]; - heci_hdr->host_addr = 0; - heci_hdr->me_addr = 0; - heci_hdr->length = - sizeof(struct hbm_client_connect_response); - heci_hdr->msg_complete = 1; - heci_hdr->reserved = 0; - - disconnect_res = - (struct hbm_client_connect_response *) - &dev->ext_msg_buf[1]; - disconnect_res->host_addr = file_pos->host_client_id; - disconnect_res->me_addr = file_pos->me_client_id; - *(__u8 *) (&disconnect_res->cmd) = - CLIENT_DISCONNECT_RES_CMD; - disconnect_res->status = 0; - dev->extra_write_index = 2; - break; - } - } -} - -/** - * heci_timer - timer function. - * - * @data: pointer to the device structure - * - * NOTE: This function is called by timer interrupt work - */ -void heci_wd_timer(unsigned long data) -{ - struct iamt_heci_device *dev = (struct iamt_heci_device *) data; - - DBG("send watchdog.\n"); - spin_lock_bh(&dev->device_lock); - if (dev->heci_state != HECI_ENABLED) { - mod_timer(&dev->wd_timer, round_jiffies(jiffies + 2 * HZ)); - spin_unlock_bh(&dev->device_lock); - return; - } - if (dev->wd_file_ext.state != HECI_FILE_CONNECTED) { - mod_timer(&dev->wd_timer, round_jiffies(jiffies + 2 * HZ)); - spin_unlock_bh(&dev->device_lock); - return; - } - /* Watchdog */ - if ((dev->wd_due_counter != 0) && (dev->wd_bypass == 0)) { - if (--dev->wd_due_counter == 0) { - if (dev->host_buffer_is_empty && - flow_ctrl_creds(dev, &dev->wd_file_ext)) { - dev->host_buffer_is_empty = 0; - if (!heci_send_wd(dev)) { - DBG("wd send failed.\n"); - } else { - flow_ctrl_reduce(dev, - &dev->wd_file_ext); - } - - if (dev->wd_timeout != 0) - dev->wd_due_counter = 2; - else - dev->wd_due_counter = 0; - - } else - dev->wd_pending = 1; - - } - } - if (dev->iamthif_stall_timer != 0) { - if (--dev->iamthif_stall_timer == 0) { - DBG("reseting because of hang to PTHI.\n"); - heci_reset(dev, 1); - dev->iamthif_msg_buf_size = 0; - dev->iamthif_msg_buf_index = 0; - dev->iamthif_canceled = 0; - dev->iamthif_ioctl = 1; - dev->iamthif_state = HECI_IAMTHIF_IDLE; - dev->iamthif_timer = 0; - spin_unlock_bh(&dev->device_lock); - - if (dev->iamthif_current_cb) - heci_free_cb_private(dev->iamthif_current_cb); - - spin_lock_bh(&dev->device_lock); - dev->iamthif_file_object = NULL; - dev->iamthif_current_cb = NULL; - run_next_iamthif_cmd(dev); - } - } - mod_timer(&dev->wd_timer, round_jiffies(jiffies + 2 * HZ)); - spin_unlock_bh(&dev->device_lock); -} diff --git a/drivers/staging/heci/io_heci.c b/drivers/staging/heci/io_heci.c deleted file mode 100644 index 1a6faf88e16c..000000000000 --- a/drivers/staging/heci/io_heci.c +++ /dev/null @@ -1,872 +0,0 @@ -/* - * Part of Intel(R) Manageability Engine Interface Linux driver - * - * Copyright (c) 2003 - 2008 Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - * - */ - -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/kernel.h> -#include <linux/slab.h> -#include <linux/fs.h> -#include <linux/errno.h> -#include <linux/types.h> -#include <linux/fcntl.h> -#include <linux/aio.h> -#include <linux/pci.h> -#include <linux/reboot.h> -#include <linux/poll.h> -#include <linux/init.h> -#include <linux/kdev_t.h> -#include <linux/ioctl.h> -#include <linux/cdev.h> -#include <linux/list.h> -#include <linux/unistd.h> -#include <linux/delay.h> - -#include "heci_data_structures.h" -#include "heci.h" -#include "heci_interface.h" -#include "heci_version.h" - - -/** - * heci_ioctl_get_version - the get driver version IOCTL function - * - * @dev: Device object for our driver - * @if_num: minor number - * @*u_msg: pointer to user data struct in user space - * @k_msg: data in kernel on the stack - * @file_ext: private data of the file object - * - * returns 0 on success, <0 on failure. - */ -int heci_ioctl_get_version(struct iamt_heci_device *dev, int if_num, - struct heci_message_data __user *u_msg, - struct heci_message_data k_msg, - struct heci_file_private *file_ext) -{ - int rets = 0; - struct heci_driver_version *version; - struct heci_message_data res_msg; - - if ((if_num != HECI_MINOR_NUMBER) || (!dev) - || (!file_ext)) - return -ENODEV; - - if (k_msg.size < (sizeof(struct heci_driver_version) - 2)) { - DBG("user buffer less than heci_driver_version.\n"); - return -EMSGSIZE; - } - - res_msg.data = kmalloc(sizeof(struct heci_driver_version), GFP_KERNEL); - if (!res_msg.data) { - DBG("failed allocation response buffer size = %d.\n", - (int) sizeof(struct heci_driver_version)); - return -ENOMEM; - } - - version = (struct heci_driver_version *) res_msg.data; - version->major = MAJOR_VERSION; - version->minor = MINOR_VERSION; - version->hotfix = QUICK_FIX_NUMBER; - version->build = VER_BUILD; - res_msg.size = sizeof(struct heci_driver_version); - if (k_msg.size < sizeof(struct heci_driver_version)) - res_msg.size -= 2; - - rets = file_ext->status; - /* now copy the data to user space */ - if (copy_to_user((void __user *)k_msg.data, res_msg.data, res_msg.size)) { - rets = -EFAULT; - goto end; - } - if (put_user(res_msg.size, &u_msg->size)) { - rets = -EFAULT; - goto end; - } -end: - kfree(res_msg.data); - return rets; -} - -/** - * heci_ioctl_connect_client - the connect to fw client IOCTL function - * - * @dev: Device object for our driver - * @if_num: minor number - * @*u_msg: pointer to user data struct in user space - * @k_msg: data in kernel on the stack - * @file_ext: private data of the file object - * - * returns 0 on success, <0 on failure. - */ -int heci_ioctl_connect_client(struct iamt_heci_device *dev, int if_num, - struct heci_message_data __user *u_msg, - struct heci_message_data k_msg, - struct file *file) -{ - int rets = 0; - struct heci_message_data req_msg, res_msg; - struct heci_cb_private *priv_cb = NULL; - struct heci_client *client; - struct heci_file_private *file_ext; - struct heci_file_private *file_pos = NULL; - struct heci_file_private *file_next = NULL; - long timeout = 15; /*15 second */ - __u8 i; - int err = 0; - - if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file)) - return -ENODEV; - - file_ext = file->private_data; - if (!file_ext) - return -ENODEV; - - if (k_msg.size != sizeof(struct guid)) { - DBG("user buffer size is not equal to size of struct " - "guid(16).\n"); - return -EMSGSIZE; - } - - if (!k_msg.data) - return -EIO; - - req_msg.data = kmalloc(sizeof(struct guid), GFP_KERNEL); - res_msg.data = kmalloc(sizeof(struct heci_client), GFP_KERNEL); - - if (!res_msg.data) { - DBG("failed allocation response buffer size = %d.\n", - (int) sizeof(struct heci_client)); - kfree(req_msg.data); - return -ENOMEM; - } - if (!req_msg.data) { - DBG("failed allocation request buffer size = %d.\n", - (int) sizeof(struct guid)); - kfree(res_msg.data); - return -ENOMEM; - } - req_msg.size = sizeof(struct guid); - res_msg.size = sizeof(struct heci_client); - - /* copy the message to kernel space - - * use a pointer already copied into kernel space - */ - if (copy_from_user(req_msg.data, (void __user *)k_msg.data, k_msg.size)) { - rets = -EFAULT; - goto end; - } - /* buffered ioctl cb */ - priv_cb = kzalloc(sizeof(struct heci_cb_private), GFP_KERNEL); - if (!priv_cb) { - rets = -ENOMEM; - goto end; - } - INIT_LIST_HEAD(&priv_cb->cb_list); - priv_cb->response_buffer.data = res_msg.data; - priv_cb->response_buffer.size = res_msg.size; - priv_cb->request_buffer.data = req_msg.data; - priv_cb->request_buffer.size = req_msg.size; - priv_cb->major_file_operations = HECI_IOCTL; - spin_lock_bh(&dev->device_lock); - if (dev->heci_state != HECI_ENABLED) { - rets = -ENODEV; - spin_unlock_bh(&dev->device_lock); - goto end; - } - if ((file_ext->state != HECI_FILE_INITIALIZING) && - (file_ext->state != HECI_FILE_DISCONNECTED)) { - rets = -EBUSY; - spin_unlock_bh(&dev->device_lock); - goto end; - } - - /* find ME client we're trying to connect to */ - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (memcmp((struct guid *)req_msg.data, - &dev->me_clients[i].props.protocol_name, - sizeof(struct guid)) == 0) { - if (dev->me_clients[i].props.fixed_address == 0) { - file_ext->me_client_id = - dev->me_clients[i].client_id; - file_ext->state = HECI_FILE_CONNECTING; - } - break; - } - } - /* if we're connecting to PTHI client so we will use the exist - * connection - */ - if (memcmp((struct guid *)req_msg.data, &heci_pthi_guid, - sizeof(struct guid)) == 0) { - if (dev->iamthif_file_ext.state != HECI_FILE_CONNECTED) { - rets = -ENODEV; - spin_unlock_bh(&dev->device_lock); - goto end; - } - dev->heci_host_clients[file_ext->host_client_id / 8] &= - ~(1 << (file_ext->host_client_id % 8)); - list_for_each_entry_safe(file_pos, - file_next, &dev->file_list, link) { - if (heci_fe_same_id(file_ext, file_pos)) { - DBG("remove file private data node host" - " client = %d, ME client = %d.\n", - file_pos->host_client_id, - file_pos->me_client_id); - list_del(&file_pos->link); - } - - } - DBG("free file private data memory.\n"); - kfree(file_ext); - file_ext = NULL; - file->private_data = &dev->iamthif_file_ext; - client = (struct heci_client *) res_msg.data; - client->max_msg_length = - dev->me_clients[i].props.max_msg_length; - client->protocol_version = - dev->me_clients[i].props.protocol_version; - rets = dev->iamthif_file_ext.status; - spin_unlock_bh(&dev->device_lock); - - /* now copy the data to user space */ - if (copy_to_user((void __user *)k_msg.data, - res_msg.data, res_msg.size)) { - rets = -EFAULT; - goto end; - } - if (put_user(res_msg.size, &u_msg->size)) { - rets = -EFAULT; - goto end; - } - goto end; - } - spin_unlock_bh(&dev->device_lock); - - spin_lock(&file_ext->file_lock); - spin_lock_bh(&dev->device_lock); - if (file_ext->state != HECI_FILE_CONNECTING) { - rets = -ENODEV; - spin_unlock_bh(&dev->device_lock); - spin_unlock(&file_ext->file_lock); - goto end; - } - /* prepare the output buffer */ - client = (struct heci_client *) res_msg.data; - client->max_msg_length = dev->me_clients[i].props.max_msg_length; - client->protocol_version = dev->me_clients[i].props.protocol_version; - if (dev->host_buffer_is_empty - && !other_client_is_connecting(dev, file_ext)) { - dev->host_buffer_is_empty = 0; - if (!heci_connect(dev, file_ext)) { - rets = -ENODEV; - spin_unlock_bh(&dev->device_lock); - spin_unlock(&file_ext->file_lock); - goto end; - } else { - file_ext->timer_count = HECI_CONNECT_TIMEOUT; - priv_cb->file_private = file_ext; - list_add_tail(&priv_cb->cb_list, - &dev->ctrl_rd_list.heci_cb. - cb_list); - } - - - } else { - priv_cb->file_private = file_ext; - DBG("add connect cb to control write list.\n"); - list_add_tail(&priv_cb->cb_list, - &dev->ctrl_wr_list.heci_cb.cb_list); - } - spin_unlock_bh(&dev->device_lock); - spin_unlock(&file_ext->file_lock); - err = wait_event_timeout(dev->wait_recvd_msg, - (HECI_FILE_CONNECTED == file_ext->state - || HECI_FILE_DISCONNECTED == file_ext->state), - timeout * HZ); - - spin_lock_bh(&dev->device_lock); - if (HECI_FILE_CONNECTED == file_ext->state) { - spin_unlock_bh(&dev->device_lock); - DBG("successfully connected to FW client.\n"); - rets = file_ext->status; - /* now copy the data to user space */ - if (copy_to_user((void __user *)k_msg.data, - res_msg.data, res_msg.size)) { - rets = -EFAULT; - goto end; - } - if (put_user(res_msg.size, &u_msg->size)) { - rets = -EFAULT; - goto end; - } - goto end; - } else { - DBG("failed to connect to FW client.file_ext->state = %d.\n", - file_ext->state); - spin_unlock_bh(&dev->device_lock); - if (!err) { - DBG("wait_event_interruptible_timeout failed on client" - " connect message fw response message.\n"); - } - rets = -EFAULT; - goto remove_list; - } - -remove_list: - if (priv_cb) { - spin_lock_bh(&dev->device_lock); - heci_flush_list(&dev->ctrl_rd_list, file_ext); - heci_flush_list(&dev->ctrl_wr_list, file_ext); - spin_unlock_bh(&dev->device_lock); - } -end: - DBG("free connect cb memory."); - kfree(req_msg.data); - kfree(res_msg.data); - kfree(priv_cb); - return rets; -} - -/** - * heci_ioctl_wd - the wd IOCTL function - * - * @dev: Device object for our driver - * @if_num: minor number - * @k_msg: data in kernel on the stack - * @file_ext: private data of the file object - * - * returns 0 on success, <0 on failure. - */ -int heci_ioctl_wd(struct iamt_heci_device *dev, int if_num, - struct heci_message_data k_msg, - struct heci_file_private *file_ext) -{ - int rets = 0; - struct heci_message_data req_msg; /*in kernel on the stack */ - - if (if_num != HECI_MINOR_NUMBER) - return -ENODEV; - - spin_lock(&file_ext->file_lock); - if (k_msg.size != HECI_WATCHDOG_DATA_SIZE) { - DBG("user buffer has invalid size.\n"); - spin_unlock(&file_ext->file_lock); - return -EMSGSIZE; - } - spin_unlock(&file_ext->file_lock); - - req_msg.data = kmalloc(HECI_WATCHDOG_DATA_SIZE, GFP_KERNEL); - if (!req_msg.data) { - DBG("failed allocation request buffer size = %d.\n", - HECI_WATCHDOG_DATA_SIZE); - return -ENOMEM; - } - req_msg.size = HECI_WATCHDOG_DATA_SIZE; - - /* copy the message to kernel space - use a pointer already - * copied into kernel space - */ - if (copy_from_user(req_msg.data, - (void __user *)k_msg.data, req_msg.size)) { - rets = -EFAULT; - goto end; - } - spin_lock_bh(&dev->device_lock); - if (dev->heci_state != HECI_ENABLED) { - rets = -ENODEV; - spin_unlock_bh(&dev->device_lock); - goto end; - } - - if (dev->wd_file_ext.state != HECI_FILE_CONNECTED) { - rets = -ENODEV; - spin_unlock_bh(&dev->device_lock); - goto end; - } - if (!dev->asf_mode) { - rets = -EIO; - spin_unlock_bh(&dev->device_lock); - goto end; - } - - memcpy(&dev->wd_data[HECI_WD_PARAMS_SIZE], req_msg.data, - HECI_WATCHDOG_DATA_SIZE); - - dev->wd_timeout = (req_msg.data[1] << 8) + req_msg.data[0]; - dev->wd_pending = 0; - dev->wd_due_counter = 1; /* next timer */ - if (dev->wd_timeout == 0) { - memcpy(dev->wd_data, heci_stop_wd_params, - HECI_WD_PARAMS_SIZE); - } else { - memcpy(dev->wd_data, heci_start_wd_params, - HECI_WD_PARAMS_SIZE); - mod_timer(&dev->wd_timer, jiffies); - } - spin_unlock_bh(&dev->device_lock); -end: - kfree(req_msg.data); - return rets; -} - - -/** - * heci_ioctl_bypass_wd - the bypass_wd IOCTL function - * - * @dev: Device object for our driver - * @if_num: minor number - * @k_msg: data in kernel on the stack - * @file_ext: private data of the file object - * - * returns 0 on success, <0 on failure. - */ -int heci_ioctl_bypass_wd(struct iamt_heci_device *dev, int if_num, - struct heci_message_data k_msg, - struct heci_file_private *file_ext) -{ - __u8 flag = 0; - int rets = 0; - - if (if_num != HECI_MINOR_NUMBER) - return -ENODEV; - - spin_lock(&file_ext->file_lock); - if (k_msg.size < 1) { - DBG("user buffer less than HECI_WATCHDOG_DATA_SIZE.\n"); - spin_unlock(&file_ext->file_lock); - return -EMSGSIZE; - } - spin_unlock(&file_ext->file_lock); - if (copy_from_user(&flag, (void __user *)k_msg.data, 1)) { - rets = -EFAULT; - goto end; - } - - spin_lock_bh(&dev->device_lock); - flag = flag ? (1) : (0); - dev->wd_bypass = flag; - spin_unlock_bh(&dev->device_lock); -end: - return rets; -} - -/** - * find_pthi_read_list_entry - finds a PTHIlist entry for current file - * - * @dev: Device object for our driver - * @file: pointer to file object - * - * returns returned a list entry on success, NULL on failure. - */ -struct heci_cb_private *find_pthi_read_list_entry( - struct iamt_heci_device *dev, - struct file *file) -{ - struct heci_file_private *file_ext_temp; - struct heci_cb_private *priv_cb_pos = NULL; - struct heci_cb_private *priv_cb_next = NULL; - - if ((dev->pthi_read_complete_list.status == 0) && - !list_empty(&dev->pthi_read_complete_list.heci_cb.cb_list)) { - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - &dev->pthi_read_complete_list.heci_cb.cb_list, cb_list) { - file_ext_temp = (struct heci_file_private *) - priv_cb_pos->file_private; - if ((file_ext_temp != NULL) && - (file_ext_temp == &dev->iamthif_file_ext) && - (priv_cb_pos->file_object == file)) - return priv_cb_pos; - } - } - return NULL; -} - -/** - * pthi_read - read data from pthi client - * - * @dev: Device object for our driver - * @if_num: minor number - * @file: pointer to file object - * @*ubuf: pointer to user data in user space - * @length: data length to read - * @offset: data read offset - * - * returns - * returned data length on success, - * zero if no data to read, - * negative on failure. - */ -int pthi_read(struct iamt_heci_device *dev, int if_num, struct file *file, - char __user *ubuf, size_t length, loff_t *offset) -{ - int rets = 0; - struct heci_cb_private *priv_cb = NULL; - struct heci_file_private *file_ext = file->private_data; - __u8 i; - unsigned long currtime = get_seconds(); - - if ((if_num != HECI_MINOR_NUMBER) || (!dev)) - return -ENODEV; - - if ((file_ext == NULL) || (file_ext != &dev->iamthif_file_ext)) - return -ENODEV; - - spin_lock_bh(&dev->device_lock); - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (dev->me_clients[i].client_id == - dev->iamthif_file_ext.me_client_id) - break; - } - BUG_ON(dev->me_clients[i].client_id != file_ext->me_client_id); - if ((i == dev->num_heci_me_clients) - || (dev->me_clients[i].client_id != - dev->iamthif_file_ext.me_client_id)) { - DBG("PTHI client not found.\n"); - spin_unlock_bh(&dev->device_lock); - return -ENODEV; - } - priv_cb = find_pthi_read_list_entry(dev, file); - if (!priv_cb) { - spin_unlock_bh(&dev->device_lock); - return 0; /* No more data to read */ - } else { - if (priv_cb && - (currtime - priv_cb->read_time > IAMTHIF_READ_TIMER)) { - /* 15 sec for the message has expired */ - list_del(&priv_cb->cb_list); - spin_unlock_bh(&dev->device_lock); - rets = -ETIMEDOUT; - goto free; - } - /* if the whole message will fit remove it from the list */ - if ((priv_cb->information >= *offset) && - (length >= (priv_cb->information - *offset))) - list_del(&priv_cb->cb_list); - else if ((priv_cb->information > 0) && - (priv_cb->information <= *offset)) { - /* end of the message has been reached */ - list_del(&priv_cb->cb_list); - rets = 0; - spin_unlock_bh(&dev->device_lock); - goto free; - } - /* else means that not full buffer will be read and do not - * remove message from deletion list - */ - } - DBG("pthi priv_cb->response_buffer size - %d\n", - priv_cb->response_buffer.size); - DBG("pthi priv_cb->information - %lu\n", - priv_cb->information); - spin_unlock_bh(&dev->device_lock); - - /* length is being turncated to PAGE_SIZE, however, - * the information may be longer */ - length = length < (priv_cb->information - *offset) ? - length : (priv_cb->information - *offset); - - if (copy_to_user(ubuf, - priv_cb->response_buffer.data + *offset, - length)) - rets = -EFAULT; - else { - rets = length; - if ((*offset + length) < priv_cb->information) { - *offset += length; - goto out; - } - } -free: - DBG("free pthi cb memory.\n"); - *offset = 0; - heci_free_cb_private(priv_cb); -out: - return rets; -} - -/** - * heci_start_read - the start read client message function. - * - * @dev: Device object for our driver - * @if_num: minor number - * @file_ext: private data of the file object - * - * returns 0 on success, <0 on failure. - */ -int heci_start_read(struct iamt_heci_device *dev, int if_num, - struct heci_file_private *file_ext) -{ - int rets = 0; - __u8 i; - struct heci_cb_private *priv_cb = NULL; - - if ((if_num != HECI_MINOR_NUMBER) || (!dev) || (!file_ext)) { - DBG("received wrong function input param.\n"); - return -ENODEV; - } - - spin_lock_bh(&dev->device_lock); - if (file_ext->state != HECI_FILE_CONNECTED) { - spin_unlock_bh(&dev->device_lock); - return -ENODEV; - } - - if (dev->heci_state != HECI_ENABLED) { - spin_unlock_bh(&dev->device_lock); - return -ENODEV; - } - spin_unlock_bh(&dev->device_lock); - DBG("check if read is pending.\n"); - spin_lock_bh(&file_ext->read_io_lock); - if ((file_ext->read_pending) || (file_ext->read_cb != NULL)) { - DBG("read is pending.\n"); - spin_unlock_bh(&file_ext->read_io_lock); - return -EBUSY; - } - spin_unlock_bh(&file_ext->read_io_lock); - - priv_cb = kzalloc(sizeof(struct heci_cb_private), GFP_KERNEL); - if (!priv_cb) - return -ENOMEM; - - spin_lock_bh(&file_ext->read_io_lock); - DBG("allocation call back success\n" - "host client = %d, ME client = %d\n", - file_ext->host_client_id, file_ext->me_client_id); - spin_unlock_bh(&file_ext->read_io_lock); - - spin_lock_bh(&dev->device_lock); - spin_lock_bh(&file_ext->read_io_lock); - for (i = 0; i < dev->num_heci_me_clients; i++) { - if (dev->me_clients[i].client_id == file_ext->me_client_id) - break; - - } - - BUG_ON(dev->me_clients[i].client_id != file_ext->me_client_id); - spin_unlock_bh(&file_ext->read_io_lock); - if (i == dev->num_heci_me_clients) { - rets = -ENODEV; - goto unlock; - } - - priv_cb->response_buffer.size = dev->me_clients[i].props.max_msg_length; - spin_unlock_bh(&dev->device_lock); - priv_cb->response_buffer.data = - kmalloc(priv_cb->response_buffer.size, GFP_KERNEL); - if (!priv_cb->response_buffer.data) { - rets = -ENOMEM; - goto fail; - } - DBG("allocation call back data success.\n"); - priv_cb->major_file_operations = HECI_READ; - /* make sure information is zero before we start */ - priv_cb->information = 0; - priv_cb->file_private = (void *) file_ext; - spin_lock_bh(&dev->device_lock); - spin_lock_bh(&file_ext->read_io_lock); - file_ext->read_cb = priv_cb; - if (dev->host_buffer_is_empty) { - dev->host_buffer_is_empty = 0; - if (!heci_send_flow_control(dev, file_ext)) { - rets = -ENODEV; - spin_unlock_bh(&file_ext->read_io_lock); - goto unlock; - } else { - list_add_tail(&priv_cb->cb_list, - &dev->read_list.heci_cb.cb_list); - } - } else { - list_add_tail(&priv_cb->cb_list, - &dev->ctrl_wr_list.heci_cb.cb_list); - } - spin_unlock_bh(&file_ext->read_io_lock); - spin_unlock_bh(&dev->device_lock); - return rets; -unlock: - spin_unlock_bh(&dev->device_lock); -fail: - heci_free_cb_private(priv_cb); - return rets; -} - -/** - * pthi_write - write iamthif data to pthi client - * - * @dev: Device object for our driver - * @priv_cb: heci call back struct - * - * returns 0 on success, <0 on failure. - */ -int pthi_write(struct iamt_heci_device *dev, - struct heci_cb_private *priv_cb) -{ - int rets = 0; - struct heci_msg_hdr heci_hdr; - - if ((!dev) || (!priv_cb)) - return -ENODEV; - - DBG("write data to pthi client.\n"); - - dev->iamthif_state = HECI_IAMTHIF_WRITING; - dev->iamthif_current_cb = priv_cb; - dev->iamthif_file_object = priv_cb->file_object; - dev->iamthif_canceled = 0; - dev->iamthif_ioctl = 1; - dev->iamthif_msg_buf_size = priv_cb->request_buffer.size; - memcpy(dev->iamthif_msg_buf, priv_cb->request_buffer.data, - priv_cb->request_buffer.size); - - if (flow_ctrl_creds(dev, &dev->iamthif_file_ext) && - dev->host_buffer_is_empty) { - dev->host_buffer_is_empty = 0; - if (priv_cb->request_buffer.size > - (((dev->host_hw_state & H_CBD) >> 24) * - sizeof(__u32)) - sizeof(struct heci_msg_hdr)) { - heci_hdr.length = - (((dev->host_hw_state & H_CBD) >> 24) * - sizeof(__u32)) - sizeof(struct heci_msg_hdr); - heci_hdr.msg_complete = 0; - } else { - heci_hdr.length = priv_cb->request_buffer.size; - heci_hdr.msg_complete = 1; - } - - heci_hdr.host_addr = dev->iamthif_file_ext.host_client_id; - heci_hdr.me_addr = dev->iamthif_file_ext.me_client_id; - heci_hdr.reserved = 0; - dev->iamthif_msg_buf_index += heci_hdr.length; - if (!heci_write_message(dev, &heci_hdr, - (unsigned char *)(dev->iamthif_msg_buf), - heci_hdr.length)) - return -ENODEV; - - if (heci_hdr.msg_complete) { - flow_ctrl_reduce(dev, &dev->iamthif_file_ext); - dev->iamthif_flow_control_pending = 1; - dev->iamthif_state = HECI_IAMTHIF_FLOW_CONTROL; - DBG("add pthi cb to write waiting list\n"); - dev->iamthif_current_cb = priv_cb; - dev->iamthif_file_object = priv_cb->file_object; - list_add_tail(&priv_cb->cb_list, - &dev->write_waiting_list.heci_cb.cb_list); - } else { - DBG("message does not complete, " - "so add pthi cb to write list.\n"); - list_add_tail(&priv_cb->cb_list, - &dev->write_list.heci_cb.cb_list); - } - } else { - if (!(dev->host_buffer_is_empty)) - DBG("host buffer is not empty"); - - DBG("No flow control credentials, " - "so add iamthif cb to write list.\n"); - list_add_tail(&priv_cb->cb_list, - &dev->write_list.heci_cb.cb_list); - } - return rets; -} - -/** - * iamthif_ioctl_send_msg - send cmd data to pthi client - * - * @dev: Device object for our driver - * - * returns 0 on success, <0 on failure. - */ -void run_next_iamthif_cmd(struct iamt_heci_device *dev) -{ - struct heci_file_private *file_ext_tmp; - struct heci_cb_private *priv_cb_pos = NULL; - struct heci_cb_private *priv_cb_next = NULL; - int status = 0; - - if (!dev) - return; - - dev->iamthif_msg_buf_size = 0; - dev->iamthif_msg_buf_index = 0; - dev->iamthif_canceled = 0; - dev->iamthif_ioctl = 1; - dev->iamthif_state = HECI_IAMTHIF_IDLE; - dev->iamthif_timer = 0; - dev->iamthif_file_object = NULL; - - if (dev->pthi_cmd_list.status == 0 && - !list_empty(&dev->pthi_cmd_list.heci_cb.cb_list)) { - DBG("complete pthi cmd_list cb.\n"); - - list_for_each_entry_safe(priv_cb_pos, priv_cb_next, - &dev->pthi_cmd_list.heci_cb.cb_list, cb_list) { - list_del(&priv_cb_pos->cb_list); - file_ext_tmp = (struct heci_file_private *) - priv_cb_pos->file_private; - - if ((file_ext_tmp != NULL) && - (file_ext_tmp == &dev->iamthif_file_ext)) { - status = pthi_write(dev, priv_cb_pos); - if (status != 0) { - DBG("pthi write failed status = %d\n", - status); - return; - } - break; - } - } - } -} - -/** - * heci_free_cb_private - free heci_cb_private related memory - * - * @priv_cb: heci callback struct - */ -void heci_free_cb_private(struct heci_cb_private *priv_cb) -{ - if (priv_cb == NULL) - return; - - kfree(priv_cb->request_buffer.data); - kfree(priv_cb->response_buffer.data); - kfree(priv_cb); -} - |